Bulldozer Urbanism

As featured in:

1. Preservation New Jersey: Ten Most Endangered Historic Places  May 18, 2021
2. After Warren Street School Demolished, James Street Named ‘Most Endangered’  May 18
3. Newark Historic District Designated as Endangered  May 18, 2021
4. James Street Community Rushes to Stall NJIT’s Demolition of Historic School  May 6, 2021
5. Nothing Lasts Forever, Not even at NJIT   February 1, 2021
6. SHPO Delays NJIT’s Plan to Raze 4 Historic Buildings    January 8, 2021
7. NJIT’s Plans to Demolish Buildings in Historic District Temporarily Derailed   January 7, 2021
8. Old Jail Could Inspire Youth to Stay Out of Prison – But Only If It Survives   July 4, 2020
9. NJIT’s Plans to Modernize Its Campus Could Cost Newark Some History   March 12, 2020

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James Street Commons demolitions completed and proposed as of April 2021

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Note: Visiting NJIT’s architecture school at age six and seeing students working there was what initially inspired my desire to study architecture. NJIT is an asset to Newark, and the school deserves the quality of campus architecture to match. I wrote and circulated this essay about NJIT’s under-performing campus design to members of NJIT and the Newark community. I am sharing it online, too, in the hope that future leaders of NJIT will collaborate with the community to create campus architecture that is culturally and historically sensitive to Newark.

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A Pedestrian’s Observations

Experiencing NJIT’s campus from the street

In publicity materials and in meetings with Newark residents and historians, the New Jersey Institute of Technology emphasizes the quality of its campus architecture and its track record of historic preservation. The school highlights its Central King Building (formerly Central High School) and Eberhardt Hall (formerly Newark Orphan Asylum) as trophies of historic preservation.
However, beyond its fortified campus carved out during the 1960s era of “urban renewal,” the university is now escalating its demolitions in the neighboring James Street Commons Historic District. Listed since 1978 on the National Register of Historic Places, this neighborhood is the city’s first historic district and contains some of Newark’s most significant historic assets. The spending of millions of dollars on building demolitions is odd when NJIT faced a 35 million dollar budget deficit in the first half of 2021,[1] and when other Newark institutions and developers are following an opposite path of historic preservation.
As NJIT expands into the James Street Commons Historic District, there is concern that new construction will not improve the built environment. For instance, NJIT’s proposal for 240 MLK included few to no windows at pedestrian eye level. The entrance to the parking garage and trash collection was from the side of the building that faced toward the residential neighborhood. Several other structures in the neighborhood are also at risk or have already been demolished by NJIT, such as Mueller’s Florist, which was a former corset and tin toy factory built in the 1880s to 1890s. Similarly, NJIT acquired the c.1890 brownstone at 317 MLK for ~$450,000 in livable condition. In following weeks and months before NJIT received demolition approvals, windows were left open and removed, thereby accelerating decay and water damage. The current demolitions follow a longer pattern among hundreds of other buildings demolished in my neighborhood. This would all be okay if only there was better quality architecture to replace what is being lost.
I write this essay as a series of architecture observations followed by recommendations. Firstly, I provide examples of how NJIT’s current campus design is detrimental to neighborhood street life. Secondly, I document the neighborhood’s appearance before and after NJIT’s interventions through my photo comparisons of past and present. Thirdly, I provide examples of more sensitive models for alternative neighborhood redevelopment.

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Completed in 2017, NJIT’s athletic facility is the newest building on campus.
The pedestrian view along the sidewalk has no windows.

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Demolition of the 140-year-old Bowers corset factory in progress (aka Mueller’s)

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Map of NJIT campus. Buildings that face toward the street with no windows at or near eye level are indicated with red lines. Surface parking lots and parking structures for commuter students and faculty are indicated with red squares.

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1. Architecture of Fear at NJIT

NJIT’s newest architecture does not actively promote urban street life. For instance, Fenster Hall opened in 2004 at a cost of 83.5 million dollars. The architect Charles Gwathmey told the audience at the building’s dedication: “University buildings…have an obligation to give the campus a sense of place, and happily, that is what we are achieving here.” The main entrance to Fenster Hall faces inward to the campus community. Meanwhile, the side that faces toward the neighborhood and city is the parking garage and eight stories of bare concrete that rise straight up with no windows at ground level.

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The photo above is the side of Fenster Hall that faces toward the neighborhood. The emergency police call box and video surveillance signs might make out-of-town car commuters feel safe. But defensive architecture perversely has the opposite effect of making local residents, who must live with this architecture, feel excluded and surveilled.
Activist and urbanist Jane Jacobs wrote that attractive and safe neighborhoods to live in will always have “eyes on the street.” In her ideal neighborhood, shop windows, apartments, and urban life always face to the street. In active and mixed-use neighborhoods where people both live and work, there is always 24-hour street life and therefore people looking from their windows onto the street at all times.
The blank walls and surveillance cameras surrounding NJIT’s campus can be justified on grounds of public safety. However, hostile architecture that turns away from the city eliminates eyes on the street and, ironically, encourages the kind of crime it was built to defend against. In successful campus architecture, there will be reduced need for surveillance cameras.

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The side of Fenster Hall that faces toward the city discourages street life and looks like a fortress. There once was a brick mansion here like the Ballantine House or Krueger-Scott Mansion.

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Metropolitan Correctional Center in Brooklyn
Google Earth street view image

NJIT Department of Mechanical and Industrial Engineering

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Sidewalk view of NJIT Microelectronics Center

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Warren Street School: NJIT says the building is too fire damaged to save.
The photo above shows the building after the fire.

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Warren Street School before

 

and during NJIT’s demolition

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Warren Street School before

 

and during NJIT’s demolition

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Another project is the demolition of the Warren Street School for NJIT student dorms. NJIT announced demolition plans in fall 2020 on its website. The Warren Street School from the nineteenth-century is by Jeremiah O’Rourke, a resident of Newark and the same architect as Sacred Heart Basilica and some of the most important civic structures in the US. The Warren Street School passed preliminary review to be included on the National Register of Historic Places. It is also be included in Preservation NJ’s 2021 list of the ten most endangered historic sites in the state.
As a final image, here is a photo past and present of NJIT’s architecture school. At left is the Victorian structure named Weston Hall, built c.1886 as NJIT’s first home. At right is the architecture school that now occupies this site. Originally, Weston Hall faced toward the street and city. Now, the current building at this site faces away from the city and presents its rear toward the public street.

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One of NJIT’s first homes at Weston Hall[2]

was demolished and now looks like this.

When NJIT’s architecture school hosted a Regional Plan Association conference in 2004, the organizers were afraid that Mayor Cory Booker and attendees could confuse the permanently locked street doors for the building entrance, shown above at right. A note was left on the door: “Mr. Mayor, please enter through the door inside the campus.”

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2. The campus of NJIT before and after urban renewal

When the Historic Sites Council was reviewing recent demolition applications for old buildings in the James Street Commons Historic District, one of the commissioners asked: “If NJIT is taking something away from the community, what is it giving back?” This is a more fundamental question that goes beyond historic preservation. All buildings have a lifespan, and preservation is not always possible. But if a building is demolished, the building that replaces it needs to be higher quality and more actively contribute to the quality of street life than what was there before.
NJIT is a commuter school, and most educators who work at NJIT live outside Newark. This is unfortunate because Newark would benefit from having NJIT more involved in the local community. In some ways, NJIT community members who choose to live outside of Newark cannot be faulted because many Newark neighborhoods are not aesthetically pleasing. Therefore, it is in the school’s own interest to make the surrounding neighborhood a more pleasant place to live, walk, and work.
Unfortunately, the photo comparisons below illustrate that the walkability and aesthetics of my neighborhood have deteriorated since the 1960s. Universities are drivers of upward social mobility, economic growth, and knowledge production. NJIT deserves credit for this. However, the university’s built environment falls short of expressing progressive values. Architecture that presents a blank wall to the street does not benefit the city aesthetically. More crucially, this does not benefit the students’ educational experience either. Architecture that turns away from the city communicates to students that the urban environment is not safe and not worth engaging in.
In 1962, after over ten years’ preparation, the Urban Renewal Project NJ R-45 (Newark College Expansion), with federal capital grants of $7,674,309 and millions more of state and local bonds, displaced more than 1,300 families. Through eminent domain, the state demolished 87.5 acres of brownstones and historic structures next to the now James Street Commons Historic District. Five years later, the government expanded the urban renewal projects and displaced thousands more people for the campus of UMDNJ. The resulting civil unrest of July 1967 injured 727 people and killed 26. Newark’s reputation still suffers from the legacy of urban renewal.
These photos were all taken in 1960 immediately before the neighborhood’s demolition for NJIT. The wholesale demolition of old buildings, while unfortunate, was an opportunity to build back better. This opportunity was squandered with defensive architecture. Moving forward, NJIT must take every opportunity to shift toward a more inclusive and street-facing campus.

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Mueller’s Florist in 1960[3]

Building demolition in 2021

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Intersection of Warren and Summit Street in 1960[4]

The site is now a parking lot and building with no street-facing windows at eye level

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Warren looking west to High Street in 1960[5]

The same scene today. The university bookstore here has no windows to the street.

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Summit Street above Raymond Boulevard in 1960, home of a paper box company[6]

Now a multi-story parking garage for commuter students and faculty

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251 to 245 MLK in 1964[7]

Now a parking lot for St. Michael’s and NJIT

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Summit Street and New Street in 1960[8]

The winch used to lift up bales of hay is visible in the upper left of carriage house.

Fenster Hall now stands here.

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Intersection of Bleeker and Hoyt Street in 1960[9]

Department of Mechanical and Industrial Engineering

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3. A sensitive development model by Rutgers Newark

Rutgers made urban renewal mistakes in the past. But with a new university administration, the school is learning from past mistakes and becoming a better citizen of Newark.

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Rutgers Living-Learning Community (Image courtesy of RBH Group)

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Completed just last year is Rutgers’ Living-Learning Community on the full block just next door to the Hahne’s Building. At this site within the same James Street Commons Historic District as NJIT’s continuing demolitions, Rutgers inserted new student housing as infill within the urban environment. Existing structures at three of the four corners of the site help to mask the scale and mass of the new construction. The building is not too tall, includes ground floor stores, and employs brick materials and floor heights that mirror the neighboring brownstones and businesses from the nineteenth century. The result is a project of high quality that not only responds to its environment but actually feels safer and more pleasant to walk past.

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Teachers Village (Image courtesy of RBH Group)

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Similarly, the Newark Teachers Village by Newark-born Richard Meier looks toward the street and stimulates street life with ground floor activities. The project is a first in Newark because it is targeted at encouraging educators to live in the community where they work. The developer was selective about preserving some old buildings to create a more visually rich and organic streetscape of old and new. The average building is no higher than four to five stories and includes frequent setbacks and varieties of materials. Although construction of the NJIT campus displaced an entire neighborhood, there is the opportunity for new construction to resemble the quality of urban life that was lost.

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Urban renewal done wrong:
NJIT’s Cullimore Hall on Bleeker StreetMost of the façade has no windows and detracts from the quality of street life.Those boxes at sidewalk level are mechanical equipment.
Urban renewal done right: Rutgers’ Bleeker St. brownstones just one block from Cullimore Hall.These are a few of the brownstones that Rutgers fixed up and turned into university offices. The building entrances all face toward the city. Rutgers put a flowerpot at sidewalk level.

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Urban renewal done wrong:
Warren Street SchoolThis school was built in the 1890s by Jeremiah O’Rourke. NJIT demolished this landmark.
Urban renewal done right:
Old St. Michael’s HospitalThis hospital was built in the 1880s by the same Jeremiah O’Rourke. The Hanini Group is renovating this building.

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Old St. Michael’s Hospital and Warren Street School are two vacant and landmarked buildings by the same architect, built with the same method of brick construction, in the same neighborhood, and at the same period of time. However, one of these buildings is being demolished by NJIT while the other is being saved. The Hanini Group is transforming St. Michael’s Hospital into apartments and an arts center. Adaptive reuse of the hospital might be more expensive than demolition, but the success of a project must not be assessed on profit alone. As a non-profit and educational institution, NJIT needs to think longer term about higher quality projects that might have lower profit margins.

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Urban renewal done wrong:
NJIT Fenster HallParking garage at Fenster Hall: The rock landscaping in the foreground and the bare concrete wall are unpleasant to walk past.
Urban renewal done right:
Rutgers Living-Learning CommunityRutgers’ new parking garage: There are street trees, brick walls, and shop windows at ground level.
What sets NJIT’s Fenster Hall and Rutgers’ Living-Learning Community apart is the attitude of the institution to the Newark community. Fenster Hall turns its back to Newark and expresses fears of urban life. Rutgers’ newest projects are part of the city and neighborhood at a later time when Rutgers reassessed its responsibility as an urban citizen. Infill housing and historic preservation put “creative restraints” on developers and institutions. When developers like Rutgers incorporate history into their projects, the process, approvals, and financial cost might be more difficult, but the project is universally of higher quality.
The priorities and values of an institution are reflected in the architecture it creates for itself. NJIT should be an asset to Newark’s economy with so many faculty and staff who genuinely care about Newark. The school deserves better architecture that reflects its commitment to Newark. NJIT and developers alike need to think about historic preservation and the pedestrian scale in all future projects.
“Transformation is the opportunity of doing more and better with what is already existing. The demolishing is a decision of easiness and short term. It is a waste of many things—a waste of energy, a waste of material, and a waste of history. Moreover, it has a very negative social impact. For us, it is an act of violence.”
– Anne Lacaton recipient of the 2021 Pritzker Architecture Prize

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Endnotes and Image Credits

[1] https://www.njit.edu/pandemicrecovery/njit-fiscal-update

[2] https://newarkchangingsite.wordpress.com/ Images scanned from the collections of the Newark Public Library

[3] All historic images are from the Newark Public Library’s collection of photos by Samuel Berg: https://digital.npl.org/islandora/object/berg%3A96b40a0d-640a-46c0-bf48-8a232b155ccb

[4] https://digital.npl.org/islandora/object/berg%3Ab1889dcf-5009-4e8b-bbec-588c63fe3e9a

[5] https://digital.npl.org/islandora/object/berg%3Ae3100c3e-2ac2-4fb2-b42a-987ffbc0f781

[6] https://digital.npl.org/islandora/object/berg%3Ad65f7167-96a8-4e45-bb72-594ec57bf295

[7] https://digital.npl.org/islandora/object/berg%3Af94bf759-2be2-45dd-8e88-e3dd43ca8296

[8] https://digital.npl.org/islandora/object/berg%3Af58b08d8-f527-49d3-b841-2176bbba54d1

[9] https://digital.npl.org/islandora/object/berg%3A0286e6d3-b8ac-46b7-8968-5e8a39f863e2

Architecture of Endurance in Manhattan Chinatown

As featured in City as Living Laboratory’s May 2021 program for the Municipal Art Society of NY

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Eldridge Street Synagogue and Manhattan Bridge

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Welcome to Chinatown. With a population of ~150,000, this neighborhood is the largest ethnic Chinese community in the Western Hemisphere. Join us on a mile-long walk through space and time.
A few questions to keep in mind during our walk:
+ How has Chinatown changed over two centuries of urban growth? What has not changed?
+ What other cultures and ethnicities lived here before or simultaneously with the Chinese?
+ How are the challenges the Chinese faced imprinted on the built environment of Chinatown?
+ How does Chinatown street life blur the boundary between public and private space?

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Interactive Tour Map

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Thank you to Liza Cucco, Olivia Georgia, and Stephen Fan for co-creating this virtual tour. City as Living Laboratory has been exploring this neighborhood through walks for many years. A recent initiative explored issues of climate, equity, and health in Chinatown’s unique food system.

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Tour Stops

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Route of walking tour superimposed over 1782 map of Manhattan

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1. Bowery & Canal Street

Start at the southwest corner of Canal Street and Bowery, opposite the entrance to the Manhattan Bridge. The Bowery was a former Lenape trail turned dirt road linking Lower Manhattan to farms just north of where you are standing. Bowery comes from the word bouwerij in Dutch, or bower in English, meaning “a pleasant shady place under trees or climbing plants in a garden or wood.” Ironically, Lower Manhattan now has less green space per resident than most other parts of New York City.
Walk south on Bowery to our next stop at Pell Street.

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2. Edward Mooney House

Edward Mooney House (top) and Church of the Transfiguration (bottom)

The four-story home built in 1785-89 has a sloped roof and ornamental details in the Federalist style that was popular around the time of the American Revolution. Edward Mooney, a wealthy butcher, built his house at the northern edge of Manhattan’s urban growth and within site of farms and rolling hills. It is the only surviving town house in Manhattan from the period of the American Revolution, and it is a reminder of past generations and land uses in Chinatown.
In 1790, New York City was capital of the United States and consisted only of Manhattan. The town had a population of 33,000, in contrast to 2.3 million in 1910. Chinatown and the Lower East Side ranked in 1910 as one of the densest places on earth with over 300,000 people per square mile. Manhattan’s population has fallen to 1.6 million, but imagine the streets three times as crowded.
With nineteenth-century revolutions in Germany, famines in Ireland, poverty in Italy, and organized massacres of Jews in Eastern Europe (called pogroms in Yiddish), immigrants arrived by the millions; Manhattan’s population swelled. The Chinese began arriving by ship in the 1820s and 1830s. By the 1850s, there were about 150 Chinese sailors in Lower Manhattan – most migrants hoping to make their fortune in America and then return home. Most Chinese immigrants to America spoke Cantonese due to the relative poverty of this region of China. Fleeing from the poverty of China to the promise of California, they found work on the Transcontinental Railroad. Fleeing the white nationalists and death threats of California, they sought refuge in New York. Wealthy merchants in houses like Edward Mooney’s moved north, away from the pestilence and crowded conditions of Lower Manhattan. In a few decades, the area transformed from a neighborhood of English-style townhouses for the middle classes and wealthy into the mass of tenements you now see.

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3. Heading to Doyers Street

Walk down Pell Street to the intersection with Doyers Street. Notice the multi-story vertical signs that hang from the tenements. They are similar to the neon signs that clutter the streets of Hong Kong. Also notice the profusion of almost a dozen barbershops. As each generation of immigrants arrived in Manhattan, they brought with them the aesthetics and traditions of their homeland that were then integrated into the island’s streetscapes.
As you walk down Doyers Street, notice the eccentric curve of the road. Before the 1811 Manhattan grid standardized urban growth, individual landowners decided how best to divide and resell farmland for development. With no standard plan, Lower Manhattan grew organically as a crazy quilt of intersecting streets.

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Pell Street and Doyers Street

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4. Abacus Federal Savings Bank

As you approach Bowery again, notice the Chinese jewelry store to your right, one of many in the area. As immigrants in America, the Chinese were locked out of the financial system, denied home mortgages, and often relied on jewelry to symbolize and preserve wealth. Turn left and walk forty feet back up Bowery. You will see the Abacus Federal Savings Bank, founded by Chinese immigrants. In a gesture to the preferences of its immigrant customers, Abacus offers thousands of safe deposit boxes in its basement for the storage of jewelry and other valuables. Abacus was the only bank prosecuted after the 2008 financial crisis, and was later cleared of all charges by the jury’s unanimous decision. Manhattan District Attorney Cyrus Vance Jr., who is investigating Donald Trump’s taxes, charged Abacus with falsifying loan applications so that borrowers would qualify for home mortgages.

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Chinatown businesses

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5. Kimlau memorial gate

Across the street, you will see the Kimlau memorial gate commemorating Chinese-Americans who served and died in the US military. Behind the gate is a statue of Lin Zexu, a nineteenth-century Chinese scholar and official who fought and failed to stop British and colonial powers from smuggling drugs into China in the name of “free trade” and getting millions of Chinese addicted to opium. Before 1965 reforms to US immigration policy, generations of Asians served in the US military while their friends and family were prohibited from immigrating, marrying, or owning their own homes in the suburbs. Historian Mae Ngai characterizes America’s relationship with the Chinese as simultaneously wanting cheap products and foreign labor without suffering the presence of the people who sacrificed and labored for them.

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6. Church of the Transfiguration / Wing on Wo & Co.

Walk down Bowery until you reach the intersection with Mott Street. Turn right and walk one block up Mott Street to the Church of the Transfiguration. At this site since 1801, it was first an English Lutheran church, and for a brief period in the nineteenth century a largely Irish church with a Cuban pastor. Later still, it became an Italian congregation. As Chinese replaced Italians as the neighborhood’s dominant ethnic group, the congregation became Chinese. Catholic masses are held in English, Mandarin, and Cantonese.
Across the street, you will find Wing on Wo & Co., the oldest continually-run family business in Chinatown. Its fifth-generation owner, Mei Lum, also runs the W.O.W. project, a community-based initiative that reinvents, preserves, and encourages Chinatown’s creative culture and history through arts, culture, and activism. W.O.W. hosted one of CALL’s 2018 workshops with artist Jean Shin.
Continue downhill along Mosco Street.

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Photos of Mulberry Bend by Jacob Riis

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7. Mulberry Street

Notice the several funeral homes along this stretch of Mulberry. As indicated by the century-old Baroque entrance of the Wah Wing Sang Funeral Corp., many funeral homes in Chinatown used to belong to the Italians. Italian brass bands still accompany traditional Chinese funeral rites. Opposite Wah Wing Sang, notice the corner store selling “Hell Bank Notes,” paper dollhouses, and paper versions of luxury products that will be burned at funerals in the hope that the deceased will be wealthier in the next life than he or she was in this life.
The poorest and least-favored immigrants were concentrated in this area known as Five Points. Tenements here were among the most crowded in the city, water was delivered in wooden pipes, and sanitation was difficult due to the marshy soil, causing immigrants to suffer or die here in the thousands. The ~12,200 deaths in the cholera outbreaks of 1832, 1849, 1854, and 1866 were concentrated where you are standing. One Virginia doctor treating cholera victims in Five Points concluded that their living conditions were worse than those of the worst-treated slaves in the American South. The immigrants were, he wrote, like “a flock of sheep swept off suddenly by some distemper.” Charles Dickens, lifelong chronicler of the miseries of the English working class, compared Five Points and the future site of Chinatown as worse than the slums of his native England. In language that parallels the income inequalities that plague present-day New York, Dickens described the experience of seeing wealthy ladies in fancy dresses shopping on Broadway, while thousands were gripped by poverty around the corner. He described in 1842, with surprise and horror, the site of feral pigs roaming the streets, rag pickers, and the constant scent of fever and death.
“This is the place: these narrow ways, diverging to the right and left, and reeking everywhere with dirt and filth. Such lives as are led here, bear the same fruits here as elsewhere. The coarse and bloated faces at the doors, have counterparts at home, and all the wide world over.”

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8. Columbus Park & Collect Pond

This neighborhood was once part of a wetland the city filled in, and the spot you are standing on was part of a small marshy body of water known as the Collect Pond.
Eric Sanderson tells us how this place came to be what in his seminal 2013 book Mannahatta:
“In the early days of the nineteenth century, city leaders allowed a tannery to set up shop on the edge of the Collect. Tanneries preserve the skins of animals by soaking their hides in plant chemicals (tannins – the same compounds that give a young red wine its bite) extracted from local trees, especially hemlock and oak, which, when disposed of as waste in the convenient nearby pond, rapidly poisoned the water, spoiling what had been the city’s best and most accessible drinking water. Remember that New York City was built on an island in a tidal (i.e., salty) estuary, with no possibility of drinking from the Hudson and East rivers. The spoilage of the Collect led to plans to bring in water from uptown, orders to dig wells to extract the groundwater downtown, and eventually construction of the Croton water system, which would bring water from Westchester, thirty miles away. (It also led to a bank – Aaron Burr formed the “Manhattan Water Company” in 1808 to bring water from streams uptown, but then used the assets to form a bank, later known as the Chase Manhattan Bank, and now a part of JPMorgan Chase.) In the meantime, city leaders voted to fill in the verdant Collect, by leveling the adjacent hills into the stagnant waters and declining marshes.
“The city advanced rapidly over the site with the construction of tenements, churches, and businesses around the short-lived and quickly forgotten “Paradise Square.” Within a decade the land began to subside, having been incompletely filled; the formerly luxuriant vegetation of the shrub-swamp and coastal-plain-pond shore, now trapped in the soil, began to decompose and release unpleasant vapors. In other words, the landscape, disturbed by the pond being filled, began to adjust, by stinking and collapsing. Those people who could left for more salubrious uptown addresses, while those who couldn’t, mainly immigrant Irish and freed blacks, stayed on in increasingly dangerous and crowded tenements that sank slowly into the mire. The neighborhood became known as Five Points, for the five streets that once met over the northern edge of the Collect Pond; some of its particular charms are recalled in Martin Scorsese’s movie Gangs of New York (2002). Charles Dickens visited, and in his American Notes (1842) deplored the slum neighborhood, with its unpaved alleys filled with knee-deep mud, free-roaming pigs, rotting and sinking houses, and children sleeping on the steps. Gangs established their own competitive balance; the Plug Uglies, Dead Rabbits, and Roach Guards marked out territory as the woodcock and osprey had once done. It wasn’t until Jacob Riis, the journal and reformer, began documenting the conditions in the 1880s with a new invention, the camera, that things began to change. The city bought up and condemned most of the tenements and replaced them with large civic buildings, including the reconstructed Tombs, the city prison, and the New York Courthouse. Now, when accused criminals are arraigned in the gray stone buildings of Foley Square, they face the judge on the shores of the old Collect Pond.”
Eric W. Sanderson and Markley Boyer. “The Old Collect.” In Mannahatta: a Natural History of New York City. Abrams Books, 2013, pp. 167-69.

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9. New York County Criminal Court

The Art Deco limestone ziggurat of the New York County Criminal Court towers above the park. On a good day, the courthouse windows are left open. The smells of Chinese food and the sounds of Chinese opera drift inside, while everyone from the likes of Harvey Weinstein, to Occupy Wall Street protestors, to South Bronx teenagers charged with petty shoplifting are on trial. It is a strange coincidence that a Chinese community that has suffered from generations of state-sanctioned racism should itself be so physically close to the center of power, and yet so politically distant from making the decisions that effect their fate. Current proposals for a 50-story skyscraper of the new city jail will tower over Columbus Park and the neighborhood.
Walk to the intersection of Mulberry and Bayard Street at the end of the park, and head get back onto Mott Street.

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10. Chinese Consolidated Benevolent Association

Walk to the intersection of Mulberry and Bayard Street at the end of the park. Head one block down Bayard Street to Mott Street, and make a left. The city’s first tenement at 65 Mott Street is a seven-story affair in brick; it was built 1824 when surrounding structures were mostly two-story wooden houses. Count the number of floors of surrounding buildings; the average tenement has no more than six floors on account of being built before the widespread use of elevators. At right, you will notice the white brick home of the Chinese Consolidated Benevolent Association founded 1883. Chinatown has proved particularly resistant to gentrification due to the large share of tenements owned by benevolent associations and the Chinese themselves.

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11. Chinese Merchants’ Association Building

At the intersection with Canal Street, notice the Chinese Merchants’ Association Building built 1950 that blends the geometric aesthetic of Art Deco with elements of traditional Chinese architecture. For a community that has lived here for close to 200 years, there are comparatively few buildings in Chinatown that look traditionally Chinese.
Pay attention when crossing Canal Street. The street is continually busy from the sounds and soot of the thousands of cars and trucks that pass through Chinatown to Brooklyn and Long Island suburbs. Claiming that “cities are created by, and for traffic,” Robert Moses proposed in the 1960s to demolish hundreds of buildings in Chinatown, Little Italy, and SoHo for his Lower Manhattan Expressway. The project would slice through the urban tissue and speed the travel of suburban commuters to their jobs in the city. The project never started, and Canal Street remains as busy as ever with traffic congestion. Chinatown was almost lost.
Canal Street was historically the dividing line between Chinatown to the south and Little Italy to the north. But as second- and third-generation Italians left for better housing in the suburbs, new waves of Chinese immigrants pushed the borders of their community north above Canal Street. Continue one block up Mott to the intersection with Hester Street. Look left, and you will see some of the Italian restaurants and tricolor green, white, and red of the Italian flag.

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Chinese Merchants’ Association Building

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12. Mott Street Markets

As you continue up Mott Street, notice the variety of produce stands, and fish and meat markets that spill out onto the sidewalk. Also notice the variety of food delivery trucks, handcarts, and boxed food waiting on the sidewalk to be unpacked. At some points, the sidewalk becomes so narrow from the food stands that the boundary between public and private dissolves.
Exploring the food systems that make up Chinatown’s markets is a major focus of CALL’s work in this neighborhood. After finishing the walk, you can check out another walk Dr. Valerie Imbruce and Stephen Fan put together exploring the food system.

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13. A Mixed Use Neighborhood

Chinatown preserves a slice of urban life that has long since vanished from all other American cities. Before the modern laws of zoning and land use divided cities into zones of residential, commercial, and industrial, urban neighborhoods had diverse and mixed land uses. Food trucks unload onto the sidewalk while residents watch from tenements above. Bulk manufacturing noodle factories and lumber warehouses co-exist alongside the same restaurants that buy and use their products. The crowded tenements of urban laborers existed alongside the garment and industrial shops where they worked, such as the massive yellow-brick Mietz & Weiss Oil Engine Building on Mott Street that is now a supermarket. In immigrant New York, garment workers brought unfinished goods home with them to complete from crowded tenements like those that now surround you. As Jacob Riis wrote in 1890: “Nowhere in the world are so many people crowded together on a square mile as here.”
As you look up at the tenements on the left side of Mott Street, notice the floor of each tenement has four windows, and a tiny little window in the middle of each floor. These tenements from the mid to late nineteenth century originally contained about twenty apartments per building, often with sixteen people in a two-room apartment, with no running water and with shared latrines in the backyards. Showers and bathing required visits to the nearest public bathhouse or sponge baths from buckets. When later changes required indoor plumbing, bathrooms were carved out of the old tenements and the little rectangular windows were created on the middle of each floor you see today. Living conditions are less crowded and more sanitary than they were a century ago, but Chinese immigrants live in the same rooms that generations of Italians, Irish, Germans, Jews, Czechs, and Polish immigrants lived in before them.

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Mott Street tenements

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14. Leaving Mott Street

When you arrive at the intersection of Mott with Grand Street, turn right and walk two blocks to Bowery. After one block, you will spot the imposing limestone façade of the Bowery Savings Bank by the architectural firm McKim, Mead, & White.

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Old Bowery Savings Bank

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15. Old Bowery Savings Bank

When opened in 1894, it was the largest and most imposing building in the Lower East Side. The marble interior with gilded and paneled high ceilings was a statement of power, and an advertisement to the immigrant masses that the bank was a safe and permanent place to park their money. In late-nineteenth-century New York, immigrants could expect to earn around two dollars a day in sweatshops, construction, and food supply. Think of how many nickels and dimes in immigrant savings it must have taken to build the Bowery Savings Bank, or the dozens of churches and synagogues that line the streets of Chinatown

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Chinatown street scenes

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16. Back at the Bowery

At the intersection with Bowery, turn right. While only two blocks from the commerce of Mott Street, the character of Bowery is visibly different. Notice the range of furniture, lighting, and restaurant supply stores that line Bowery. Lack of storage space is a constant challenge for light industrial and supply businesses in Chinatown. Notice how some the kitchen supplies, stoves, or cookware for sale in some businesses spill out onto the sidewalk. Not only is Chinatown the center of New York City’s Chinese community, it is also the center of food supply and distribution for Chinese restaurants across the New York region. After two blocks, you will be back where you began.
As you watch the traffic edge through the triumphal arch of the Manhattan Bridge and into Chinatown, reflect on how the constant flow of immigrants have shaped and reshaped the city. Surviving in Lower Manhattan for almost 200 years, the Chinese have outlived and outgrown all other immigrant communities in Manhattan that have long since dispersed. Specific cultures and peoples have passed away, but the crowds of vibrant immigrant culture endure. Walt Whitman’s poetry is as alive today as when he wrote Crossing Brooklyn Ferry in 1856.
What is it then between us?
What is the count of the scores or hundreds of years between us?
Whatever it is, it avails not—distance avails not, and place avails not,
I too lived, Brooklyn of ample hills was mine,
I too walk’d the streets of Manhattan island, and bathed in the waters around it,
I too felt the curious abrupt questionings stir within me,
In the day among crowds of people sometimes they came upon me,
In my walks home late at night or as I lay in my bed they came upon me.

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The Privatization of Public Space in Lower Manhattan

Map created by author in QGIS with planimetric data from NYC Open Data

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More than a specific threat to New York City, the decades-long erosion of public space is an existential threat to democracy.

About 60% of Lower Manhattan’s surface area is listed as being public in some way, but only about 25% is totally unrestricted to the public in practice.*1

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New York City – and the world’s wealthiest corporations headquartered in Lower Manhattan – had much to do with inventing and spreading new technologies that influenced the urban form. Construction companies like US Steel at 165 Broadway supplied materials for the highways that sliced through cities. Car companies like Chrysler in Midtown encouraged America’s affair with gasoline. Groups like Chase Bank at 28 Liberty Street supplied home loans for whites-only suburbs. Stores like Woolworth at 233 Broadway helped replace small businesses on main street with one-stop department stories and suburban shopping malls. Above them all, the New York Stock Exchange at 11 Wall Street supervised the twentieth-century migration of wealth and capital from American industrial cities to foreign countries with cheaper labor. These changes might have started with the “titans of industry” perched in Lower Manhattan’s skyscrapers, but highways, cars, home mortgages, shopping malls, and de-industrialization all had consequences for the rest of us. This makes Manhattan the ground zero – and in more ways than just September 11 – to understand the forces shaping the loss of public space.
Over the past century, three forces in Lower Manhattan have been chipping away at the quantity and quality of public space: the car, the corporation, and the police state. Each of these three forces effected Lower Manhattan in particular and the nation at large. Each of these three forces, prompted by changes in technology, reshaped the urban form: 1) the invention of the affordable and mass-produced car that substituted for public transit; 2) the abandonment of cities for suburbs that was enabled by the car and encouraged by corporations; and 3) the invention of surveillance technologies to collect, store, and analyze data collected from public spaces. Each of these three technologies were, in turn, weaponized against the urban form to chip away at spaces that once belonged to society at large but which now belong to a select few. Each force will be analyzed in turn – the car, the corporation, and the police state – to reflect on the impact of each on Lower Manhattan’s urban form.

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Public spaces in theory:
~60% of Lower Manhattan’s surface area

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The street as public space

Pedestrians in American cities are confined to sidewalks. Most of the street is for cars. For instance, Manhattan avenues are ~100 feet wide with the middle 70 feet for cars and ~15 feet on either side for pedestrians. Pedestrians walking in the street risk possible death. After a century of the automobile, pedestrians are hard-wired that they must use only the sidewalk.
However, city streets before cars had a more democratic role in urban life. Old films of Lower Manhattan streets in 1911 show pedestrians walking wherever with little concern for the hard edge between sidewalk and street. Before the car, there were no one way streets in Manhattan, no traffic lights, no speeds limits, no road markings, and no crosswalks. There was no need for these features either. Nor was there a need for traffic engineers to optimize the timing of lights and direction of streets. Instead, the street without traffic laws was for everyone: horse-drawn carriages, trolleys, omnibuses, and pedestrians. With residents in dense tenement areas unable to access public parks and playgrounds, the street doubled as recreational space and as an extension of the sidewalk. With lower traffic speeds (horses move ~10 miles per hour), there was little risk of traffic accidents and pedestrian injuries. Fewer vehicles to begin with further allowed streets to serve multiple purposes with large avenues cluttered with pedestrians and traffic, while less busy side streets were alternative sidewalks.

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Public spaces, not counting areas for cars:
~35% of Lower Manhattan’s surface area

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1. Public space lost to cars (1900 to 1945)

Introducing mass-produced cars had consequences for street life. Firstly, traffic accidents increased year on year and pushed pedestrians to the sidewalk. New York City traffic deaths went from 332 in 1910 to 1,360 in 1929 (source, p.73). Crossing the street against moving traffic became dangerous, and using the street was governed by specific rules about speed limits and parking zones. Expanding the police state was needed to enforce these rules – that is, traffic cops. Not only were drivers punished with traffic laws, pedestrians could no longer use the street with the same freedom they had before the car.
Secondly, specific and class-based rules developed for using public space. The car was a measure of social class: The car owner would, by necessity, need to have enough income to buy a car and enough space to park it. This, in turn, restricted most urban residents from owning cars and using the public space given to car owners.
By the 1930s, Robert Moses was adding hundreds of new parks, pools, and public spaces to the city. But this expansion of public space in some areas must be measured against the contraction of public space in other areas. At the same time, Moses was clearing dozens of neighborhoods for urban renewal projects and highways. “Cities are created by and for traffic; a city without traffic is a ghost town,” he said. The value of public space must also be assessed by the rules that govern it. The city was taking away the free-form public space of city streets and was adding public space subject to new rules: Park closed from sunset to sunrise. Do not walk on the grass. No dogs allowed. No skateboarding. Children must be supervised.
Before the auto age, Lower East Side immigrant children played on streets within sight and sound of parents in tenements. Think of the 1969 advertisement for Prince Spaghetti that illustrates an immigrant culture of active and car-free street life. Today, play means a trip to the park with parents for supervised play in a gated enclosure. The car (among other causes) was the technology in urban life that transformed play from an independent activity in the public street to a regulated activity in designated playgrounds.

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The “Anthony! Anthony!” commercial for Prince Spaghetti shows a boy running home from play in the streets. The ad invokes nostalgia to encourage consumer spending on processed food. Ironically, it was this consumer spending at suburban supermarkets that was eroding the urban street life and small businesses represented in the ad. By abandoning the street and theater culture of cities for suburban living rooms with entertainment on TV, the American public was turning away from the very traditions represented in this ad.

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In 2008, 66% of New Yorkers (~5.5 million) commuted by walking or public transit. By contrast, 27% of residents in peer cities like Boston and San Francisco used walking or public transit for work. (source, p.72)
Of Manhattan’s 20 square miles, 36% is for public streets (source). An average Manhattan street gives two thirds of its surface area for cars and one third for pedestrians. So, of the 36% of Manhattan that is public streets, about one third of that is for pedestrians: 12% of available land.
Why are two thirds of all streets in Manhattan for cars when only 22% of Manhattan residents own cars? (source) Should the division of public space in streets be proportionate to the percentage of residents who own cars? Why are the majority of residents confined to the sidewalks that represent the minority of available space?
Taxes on New York City residents pay for paving the ~6,000 miles of roads and salaries for thousands of traffic police. Yet, most residents do not own cars. And most cars are either commercial vehicles on business or the private vehicles of non-New Yorkers commuting to work. In effect, urban residents are taxed for public space they do not use. At the same time, the non-New York commuters who use these streets do not pay for their upkeep. In other words, giving most public space to cars and taxing urban residents for its upkeep is a subsidy for suburban and business interests. Manhattan is the world’s most valuable real estate; there is no reason that the fraction of public spaces that remain should be given to private interests, too.
The city needs a redistribution so that the percentage of public space that is given to cars is similar to the percentage of New Yorkers who own cars. As designer and architectural critic Michael Sorkin writes in Twenty Minutes in Manhattan, a 2009 book about his experiences walking:
There is not exactly a biblical injunction that specifies the proportional division of the cross section of the block, nothing that requires that cars be given three times the space of pedestrians. Of the four lanes reserved for vehicular traffic, two are parking lanes. On our block – as with most blocks in New York – there are no meters, and parking is available on a first-come, first-served basis. The city, in effect, provides half the area of the public space on my block for the storage of private cars, and approximately forty will fit when all the spaces are occupied. The diversion of public space – some of the most valuable real estate on the planet – to the private interests of the least efficient and most dangerous and dirty means of movement in the city is a fundamental affront to the real needs and habits of New York’s citizens, the majority of whom do not own automobiles.

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Public spaces, not counting areas for cars, not counting semi-restricted or privatized public spaces: ~25% of Lower Manhattan’s surface area

The site of the World Trade Center complex forms a large hole because the space is owned by a government agency but is managed by corporations. Details of privatized spaces are pulled from map of Privately Owned Public Space and official zoning and land use map.

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2. Public space lost to the private sector (1945 to present)

In addition to reducing the amount of public space, cars empowered the migration of people, industry, and wealth from urban centers to the suburban and rural edge. In the decades after WWII, New York City lost a population of three million white people. Prominent industries relocated, such as Bell Labs that moved from Greenwich Village to new corporate campuses in suburban New Jersey. At the same time, as lower- and middle-class whites drove out of the city on bands of asphalt, minorities and immigrants with lower incomes and less consumer spending moved in. The net population loss increased poverty and made urban neighborhoods less desirable, causing consumer spending and property values to fall.
By the 1970s, the city was challenged with decaying public parks, public schools, city services, and infrastructure. But it did not enough revenue to make improvements. The city took out loans and cut back on public services like graffiti removal, causing a downward spiral with further decay of public spaces, further losses in the values of neighboring properties, and therefore less income from property taxes to pay for public services. With billions in debt and no revenue to pay off this debt, New York City wobbled within hours of bankruptcy in 1975. President Ronald Reagan’s inaugural address in 1981 captured the spirit of economic crisis:
Great as our tax burden is, it has not kept pace with public spending. For decades we have piled deficit upon deficit, mortgaging our future and our children‘s future for the temporary convenience of the present. To continue this long trend is to guarantee tremendous social, cultural, political, and economic upheavals. [….] In this present crisis, government is not the solution to our problem; government is the problem.
Reagan condemned what he saw as the over-expansion of government into all aspects of American life: welfare, taxes, regulations, and civic spaces. During his eight years as president, he supervised the largest rollback of public services in American history. With the belief in “small government,” Reagan cut back on welfare to minorities, government regulation of airlines, and government funding for infrastructure and public space. With the desire to create a “free market” for corporations to compete, Reagan announced in his inaugural address that “it is time to reawaken this industrial giant, to get government back within its means, and to lighten our punitive tax burden.”
More broadly, Ronald Reagan’s policies in America and Margaret Thatcher’s in Britain gave birth to the political philosophy of neo-liberalism. Neo-liberalism believes that government is too large and that private industry can do a better job than government caring for the public good. Therefore, public services like water, electricity, parks, railroads, highways, and healthcare should all be entrusted to corporations. Following presidents like Bill Clinton followed Reagan’s lead by slashing taxes and de-funding public services, while shifting management of many public services to the private sector. As Noam Chomsky describes: “That’s the standard technique of privatization: defund, make sure things don’t work, people get angry, you hand it over to private capital.”
Neo-liberalism has consequences for public space. Since the 1970s, city government has been surrendering public space to non-government agencies. Since 1980, Central Park has not been maintained by the city’s parks department. Instead, the non-elected and wealthy members of the Central Park Conservancy rely on donations and private funding. The twenty acres of towers, parks, public streets, and memorials of the rebuilt World Trade Center are run by Brookfield, Silverstein Properties, and the Lower Manhattan Development Corporation on behalf of the Port Authority. Green areas like Bryant Park are managed by the non-profit Bryant Park Corporation, while transit infrastructure like Penn Station is owned by National Railroad Passenger Corporation founded 1971. Similarly, streets in dozens of neighborhoods across the city and in Lower Manhattan are now part of Business Improvement Districts. Sensing that the government was not maintaining public space to adequate standards, business owners petitioned the city to form 76 Business Improvement Districts across the city that spend 167 million annually and can enforce their own preferences for the use of public space. (source)
What neoliberalism means for New York City is not so much a reduction in the actual amount of public space but rather restrictions on its use. Central Park is still open to the public, anyone can still mourn at the World Trade Center, or walk through a Business Improvement District. Many areas of Manhattan still appear to be and function as public spaces, but they are now managed by organizations that can restrict their use without being held accountable the way that city agencies report to elected officials.
More problematic is that neoliberalism has injected a corporate and business ethic for the management of public space. There was something civic and sacred about Central Park when it was built in the mid nineteenth century. Business interests like restaurants and trinket sellers were restricted from using the park, and the park was not expected to make an income for those managing it. Instead, park designer Frederick Law Olmsted Sr. saw the park as an investment by itself in the aesthetic and cultural life of New York City residents.
Public spaces today are expected to pay for themselves through incentives and tradeoffs. A common tradeoff is the public allows a developer to build higher in exchange for the developer setting aside a fraction of his building for public space, in effect sacrificing one public need (light) in exchange for another public need (open space). Old New York Penn Station gave the bulk of its spaces to the public. In the interest of profit and making public space pay for itself, the current Penn Station suffocates the public in dark and narrow caverns beneath the sports arena and office spaces above. Bryant Park hosts dozens of restaurants and dining areas that transform it into more theme park and shopping mall than open space. The new World Trade Center PATH Station opened 2016 devotes almost as much floor space to the movement of people and trains as to the selling of luxury goods at businesses surrounding the main atrium. To reach trains, passengers (or should I call them customers?) must pass through the largest shopping mall in Lower Manhattan. Stores at the PATH shopping mall, like Sephora, Apple, and Victoria’s Secret, pay rent to the real estate corporation Brookfield that values the assets under its control at 600 billion. The shopping mall might allow the magnificent and blinding white atrium that cost four billion dollars to pay for its own upkeep, but at what aesthetic and ethical cost? Why must the sacred land where almost three thousand civilians, police, and firefighters died in a terrorist attack become a site of commercialism and a source of profit?

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How much of our cities belong to We The People?

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3. Public space lost to the police state (2001 to present)

Hours after the terrorist attacks of September 11, 2001, President George Bush reassured a frightened nation:
These acts of mass murder were intended to frighten our nation into chaos and retreat. But they have failed. Our country is strong. A great people has been moved to defend a great nation. Terrorist attacks can shake the foundations of our biggest buildings, but they cannot touch the foundation of America.
The foundation of democracy depends on events of public participation like voting, public meetings, courts of law, peaceful protests, and the inauguration of new leaders. These ceremonies, in turn, require public spaces that are often ceremonial in nature like the National Mall in Washington D.C., courthouses, state capitals, and even the in-glamorous public street. A place like the World Trade Center Memorial is itself a part of democracy: a place to see and be seen, to assemble, and to remember those fallen.
To follow the logic of Bush’s statement that September 11 was “intended to frighten our nation into chaos and retreat,” then the response to anti-democratic acts of terror should be to build more public space, more ceremonial spaces for public participation, not less. Instead, September 11 has frightened the nation into a retreat from civil liberties and public spaces that are now perceived as dangerous. The public has: their internet activity monitored by the likes of Google; their movements in public recorded on camera; their spending recorded by banks and credit card companies; and their use of public space controlled by armed police officers.
The previous two assaults on public space by cars and corporations could be combated through reason and policy. Cars threaten pedestrians and control too much of the street? Add a speed limit and traffic calming measures. Corporations control too much public space? Pass laws restricting them from, say, harassing protestors and closing public spaces by night. The alliance of corporations and state have too much surveillance? This is a more difficult threat to fight. Corporations and the state resist public demands through the language of “free choice.” This street has cameras on it, but you can choose to walk somewhere else. This airport searches all passengers and steals their “contraband” possessions like shampoo, wine, and food, but you can choose other means of transport. This social media platform monitors your activity to give you advertisements that will make you insecure, angry, or depressed – whichever emotional response will bring the advertiser profit. But you chose to use social media. The rhetoric of “free choice” suppresses criticism of surveillance in public space. Besides, surveillance is for “our your own safety,” so we are told. And if we are not doing anything bad in public spaces, then we should have nothing to fear, so we are told.
However, in Manhattan specifically, constant surveillance erodes the most important feature of urban life: privacy. As E.B. White described in Here is New York, his 1949 reflection on walking in Manhattan: “On any person who desires such queer prizes, New York will bestow the gift of loneliness and the gift of privacy. It is this largess that accounts for the presence within the city’s walls of a considerable section of the population.” Anonymity is one of the greatest joys of walking, the joy of blending into the urban crowd while remaining anonymous to everyone, to see without being seen. By forcing knowability and tracking the exact location and actions of every individual, the surveillance state erodes the anonymity that has drawn generations of artists, activists, and social outcasts to world cities like New York. From Occupy Wall Street protestors, to undocumented immigrants, to generations of Blacks and Hispanics that are targeted by law enforcement, surveillance denies them the anonymity that their work and use of public space require. In the past year, the murder of Blacks by law enforcement while shopping, driving, walking, and even sleeping has highlighted the dangers minorities face when using public space. While the car and corporation eroded the physical amount of public space, surveillance erodes the quality of public spaces that remain.

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Public spaces in theory vs. in practice

Of the public space that occupies ~60% of Lower Manhattan’s surface area:
~25% is for cars; ~10% is semi-restricted or privately-owned; ~10 is for green space in parks; ~15% is for paths in parks and sidewalks along streets *2

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Can democracy survive with eroded public space?

The past thirty years have seen the return of large numbers of middle class young people to New York City, as well as the gentrification they brought. For a few years, there seemed to be a resurgence and reinvestment in public space with new bike lanes, parks, and traffic calming measures in Lower Manhattan. But just over a century since the car arrived in Lower Manhattan streets, the future of public space is again in doubt.
Coronavirus represents both an opportunity and a challenge for public space. Since the virus prohibited indoor dining, thousands of restaurants have expanded onto sidewalks. Entire lanes of parking have been transformed into dining areas, a change that will likely be permanent. While using a parking space requires several thousand dollars to participate in the club of car owners, using a restaurant built on a public space costs only as much as lunch or dinner.
At the same time, the political uses of public space have migrated online. The activities of courtrooms, classrooms, cultural events, and ways people express their dissatisfaction with government have all migrated to online forums and social media. The internet might substitute for some public spaces, but it is not owned by the public. The US Bill of Rights promises that the accused has the right “to be confronted with the witnesses against him” during a “public trial.” For generations, a public trial has meant a real space where witnesses voice their accusations in the physical presence of the accused. But can a digital space owned by private company still be considered public? Can the proprietary technology of social media and the video camera substitute for actual public space? Is the World Trade Center Path Station still public space if most Americans are priced out of shopping in nearby stores? Is the High Line still public space if the only people who can afford apartment views of it are the super rich?
E.B. White would cite that diversity and democracy cannot exist without public space. In his stroll across dozens of Manhattan neighborhoods, he observed that urban life forces people of diverse identities into the same crowded public spaces and therefore requires them to coexist and be tolerant of each other:
The collision and the intermingling of these millions of foreign-born people representing so many races and creeds make New York a permanent exhibit of the phenomenon of one world. The citizens of New York are tolerant not only from disposition but from necessity. The city has to be tolerant, otherwise it would explode in a radioactive cloud of hate and rancor and bigotry. If the people were to depart even briefly from the peace of cosmopolitan intercourse, the town would blow up higher than a kite. In New York smolders every race problem there is, but the noticeable thing is not the problem but the inviolate truce.
Time and again, researchers and writers observe that social media and the digital world allow people to self select the communities they are part of and the political views they are exposed to. The rise in both political parties of polarized identity politics and intolerance of anyone who disagrees with one’s views on gender and race are largely the products of a social media world that isolates and radicalizes people.
Public spaces like the city street and subway car mix people of all identities and incomes in a single space and are a lesson in tolerance. It is easy to hate foreigners and people of color when one’s views of these groups are filtered through the polarizing lens of social media, Fox News, and the mainstream media. But prejudice is a good deal harder to feel when one views these groups every day in public spaces going about the same routine as everyone else. While social media highlights the identity politics that make us different, public space highlights the qualities we share in common.
The loss of Lower Manhattan’s public spaces is not just a threat to urban culture. The loss of public space is an existential threat to democracy. More than ever before, this fractured country needs public space.

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City Hall Park and skyscrapers in Lower Manhattan

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“With increased use of automobiles, the life of the sidewalk and the front yard has largely disappeared, and the social intercourse that used to be the main characteristic of urban life has vanished.” – Kenneth T. Jackson

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Further reading

Michael Sorkin. Twenty Minutes in Manhattan. New York: North Point Press, 2009.
E.B. White. Here is New York. New York: Harper & Brothers Publishers, 1949.

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236,250 = total   |   92,934 = water   |   143,316 = land
Non-public before: 55,558 = 38.8% (rounded to 40%)
Non-public after: 90,826 = 63.4% (rounded to 65%)

  1. * Percentages are rough estimates from author, based on area south of Chambers Street with planimetric data from NYC Open Data. An exact estimate is impossible to arrive at because there is no single definition of public space.
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University of Michigan PhD Application

The following statements accompanied my successful application in fall 2020 to the architecture PhD program at the University of Michigan’s Taubman College of Architecture and Urban Planning. I received a full scholarship for six years with a graduate student stipend. I share these statements online for future applicants to Michigan or architecture PhD programs in general. These statements are no “template” for others’ applications. Just because this format worked for me does not mean it will work for others.
Personal statement
Research statement
Design portfolio
Curriculum vitae

(This was my CV at time of application. My current CV is linked to here.)

I applied to an architecture program not having had an undergraduate or Master’s degree in architecture; many applicants have this. My undergraduate GPA in the “History and Theory of Architecture” major at Columbia was 3.9. The three people who wrote letters for me were Kenneth T. Jackson (history), Gergely Baics (history), and Stephen Murray (art history). As the country’s leading urban historian, Professor Jackson’s recommendation was important because my PhD research proposal described my interest in urban history. Professors Baics and Murray’s advice was equally important in demonstrating past research experiences. As a large and well-funded research university, Columbia equipped me with opportunities to work with faculty like them on independent research projects.
Applying to PhD programs is a crap shot. Hundreds of people apply to a handful of spots at a few elite programs. Those who are accepted are not categorically more qualified than those rejected. Perhaps there’s some extra feature in successful applications that sets them apart from unsuccessful ones. At least in my case, my design portfolio that demonstrated my artistic sensibility helped offset my lack of an undergraduate degree in architecture. The match in research interests between my research proposal and the work of Michigan faculty members like Robert Fishman and Joy Knoblauch was an added plus. However, I can just as much see myself having been rejected from Michigan with an identical application had I applied the previous year, had there been fewer places, or had there been different members of the admissions committee. This isn’t a criticism of Michigan either because all the top schools have more applicants than places and must therefore reject thousands of qualified people.
My advice to people considering a PhD is to be persistent about applying. I applied to fifteen graduate programs three years in a row before I was accepted anywhere. The application process is long, tedious, and hard to enjoy because applying feels like putting my heart and soul into courting a program just to be turned down with a generic rejection letter. I realize it is a privilege to have the time, money, and energy so much as to even apply. For a wealthy school with multi-billion dollar endowment to ask an applicant to fork over money for an application that will most likely be rejected feels like an extra jab. In my case, however, I cannot see myself doing much else other than teaching and researching in a university environment. So the time and energy investment made sense, despite 2020 being a uniquely difficult application year during the coronavirus when hundreds of programs were no longer accepting students. I am all the more grateful to be here.

Street Grid Development vs. Population Density

Adapted from Shlomo Angel and Patrick Lamson-Hall’s NYU Stern Urbanization Project,
here and here.

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The animation at left shows street grid development from 1801 to 2011, mapping Manhattan’s gradual expansion north. The animation at right shows the population density over time of each census tract in Manhattan. Notice how Manhattan’s population density rises and peaks around 1900 before falling to present levels. Despite Manhattan’s appearance of being denser and more built up with skyscrapers than ever before, the island actually has a lower population density than a century ago.

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Before the introduction of subways in the early twentieth century, the difficulties of commuting distances over land and water drove a denser form of urbanism than today. By 1900, the island of Manhattan had over 2.3 million residents in comparison to only 1.6 million in 2020. These people were crowded into dense blocks with upward of half a million people per square mile. The subways had not yet opened, suburban sprawl had not yet arrived, there were no rail connections under the Hudson River, and Manhattan had few or no road connections with the other boroughs and the mainland. This produced an island of remarkable density with the Lower East Side the densest place on earth, while only a few miles north, Harlem remained almost rural.
In 1903, the Williamsburg Bridge over the East River linked the Lower East Side with undeveloped Brooklyn. The trolley lines, subways, and roadway that stretched over the Williamsburg accelerated the development of Brooklyn, first in the higher density parts of Brooklyn closest to Manhattan and later to the distant parts of Brooklyn and Queens with suburban population densities. Suburban growth started earlier than the 1950s image of Levittown, and with the movement of people outwards from Manhattan, the centers of immigrant cultural life shifted, too. In every following year, the Lower East Side lost people, arriving at a density in 2020 only a sixth of what it was in 1900.
Over the following decades, improvements in public transportation and the introduction of the car “smoothed” out the population density. At the same time, Manhattan’s street network expanded to cover the whole of the island from end to end. As the subways made commuting easier, people no longer need to live within walking distance of where they worked. As a result, many industries remained in Manhattan while their workers moved to other boroughs, and later still to the more distant suburbs. As a result, the population densities of Manhattan today are more consistent from one end of the island to the other. Unlike in 1900, Harlem today is about as dense of the Lower East Side because transportation has made one part of the island almost as accessible to work as any other part of the island.
This animation illustrates Manhattan specifically, but Manhattan’s growth and population densities were influenced by larger population and technology changes in the New York region.

The Detroit Evolution Animation

Created in gratitude to the University of Michigan’s PhD program in architecture

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Soundtrack: “Pruitt Igoe” from Koyaanisqatsi, directed by Godfrey Reggio and composed by Philip Glass.

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This film traces Detroit’s evolution from its origins as a French trading post in the 1700s, to its explosion as a metropolis, followed by its precipitous decline as a symbol of America’s post-industrial urban landscape. The film weaves in details about the city’s politics, population, and technology – all of which influenced the city’s geography and built environment. At each phase in urban history, the built environment grew and was modified in direct response to political events like racial segregation, population changes like the Great Migration, technology developments like the mass-produced car, and government interventions like urban renewal.
The animation tells the story of Detroit specifically and the story of American cities more broadly. To varying degrees, the path of Detroit’s development mirrors hundreds of other smaller cities and towns scattered across the American Northeast and Midwest. No other American city witnessed as large a population loss, as dramatic 1960s racial unrest, or as radical a transformation from symbol of progress into symbol of decay. To a lesser degree, other places in America followed Detroit in lockstep. Urban renewal projects, highway construction, racial tensions, suburban growth, and infrastructure under-investment happened across America, and in parallel to Detroit.
However, the most dramatic transformation of Detroit is left unwritten in this film. Beneath the surface-level events of political conflict and urban change, the largest event in Detroit is not unique to Detroit. As filmmaker Godfrey Reggio describes, the most important theme in the history of civilization is “the transiting from all nature, or the natural environment as our hosts of life for human habitation, into a technological milieu into mass technology as the environment of life.” European cities developed slowly and gradually over centuries, in the process removing all memory of the natural landscape before civilization. American cities are unique in their youth and speed of growth. They are new enough that an active memory survives through place names and written records of the landscape and indigenous peoples who lived there before colonization. As the oldest colonial settlement west of the Appalachians, and as the city that perfected the mass-produced automobile, Detroit becomes the prime symbol of man’s transformation of his home from a natural world into a technological society removed from nature.

View map bibliography and project methodology

Includes links to download all source files on which the film is based

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The accompanying music is by composer Philip Glass and was written for Godfrey Reggio’s 1982 experimental documentary Koyaanisqatsi. The shifting layers and repetitive phrases of Glass’ music accompany Reggio’s montages of natural landscapes, factory assembly lines, and chaotic city streets. Koyaanisqatsi means “life out of balance” in the language of an indigenous American tribe called the Hopi. In the original documentary, Glass’ music was paired with scenes of desolate streets in the South Bronx, the abandoned Pruitt-Igoe public housing in St. Louis, and ruined skyscrapers falling in slow motion. In my reinterpretation of Glass’ music, the imagery is now of Detroit in maps. The pace and events in the animation are tied to the structure of the music. As the volume and speed of the music increase and decrease, so too does the growth and decline of Detroit.

View music in original context

Pruit Igoe from Koyaanisqatsi; composed by Philip Glass with images by Godfrey Reggio

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Population Changes to Detroit Over Time

Hover over infographic for details of each census year.

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The influx of black people during the Great Migration and the outflow of cars from Detroit’s factories reshaped the city’s built environment and the American public’s perception of Detroit. Detroit is now thought of as a majority-black city surrounded by majority-white suburbs. Today, 83% of Detroit’s population is black, and only 11% is white. But the graph above shows that Detroit was majority-white until the 1980 census. For most of its history, Detroit was 95 to 99% white. Today, the majority of the metro region’s population lives in the suburbs that surround Detroit. But until the 1960 census, the majority of the population lived within the city limits. Today, Detroit is so reliant on the car that it has no commuter rail network, no subways, and limited public transportation options. But until the 1950s demolition of Detroit’s light rail network, a majority of residents lived within walking distance of a light rail station for commuting. Detroit’s demographics, suburban sprawl, and transportation options have all flipped in the past century. From a high-density, transportation rich, and majority-white city in 1920, Detroit has become a low-density, transportation poor, and majority-black city in 2020.
A lot of people say Detroit has terrible public transit design. But from the perspective of car companies, the real estate lobby, and fearful whites, the system does exactly what it was intended to do: to segregate and divide our country by covert means long after Jim Crow officially “ended.” Failure by design. The failure of Detroit is, in large part, planned and a consequence of government policy decisions that: prioritize suburban growth over urban development; benefit suburban whites over urban blacks; and encourage private cars at the expense of public transit.
As the Detroit Evolution Animation plays, the map key on the lower right hand corner indicates Detroit’s demographics at each decade in history. Try to link changes to demographics with changes to the urban form. Ask yourself the questions: How were technology, transportation, and demographic changes imprinted on the built environment? How does the built environment, in turn, shape urban and suburban life?

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Decaying home near Detroit’s abandoned Packard Automotive Plant

The Meaning of Notre-Dame

The construction of Notre-Dame mirrors the larger story of the French nation.
Medieval France was splintered into regional kingdoms and alliances between local feudal lords. In the tenth century, the Capetian rulers in central France started consolidating power and lands. Through conquest, marriage, and diplomacy, the Capetians expanded their influence first to Paris and then outward. By the thirteenth century, the Capetians controlled most of the land within the present-day borders of what is now France. Over this Catholic kingdom, they ruled generation after generation in centuries of uninterrupted rule until the French Revolution.
While the Capetians did not start as the largest and most powerful kingdom in Europe, they soon amplified their power through alliance with the church. From Reims Cathedral (where all Capetians were crowned) to the Church of St. Denis near Paris (where they were all buried), the French monarchs asserted power through their relationship with the church. They claimed their right to rule descended from God’s mandate. God himself ruled through and expressed his demands through the soul and mind of the king. To oppose the king would therefore be to oppose the wishes of God.
The construction of Notre-Dame of Paris was therefore a project for the Capetian kingdom in the capital city of Paris. With the monarchy’s control of France’s largest and most important trade center, the cathedral became a central symbol of the power of the city and the kingdom. From across Europe and France, other peoples looked to Notre-Dame for design inspiration. The model and building techniques of Notre-Dame were copied far and wide. Paris might have had limited geographic borders, but through the churches and monasteries in other regions that looked to Paris for aesthetic inspiration and theological guidance, Paris wielded a soft power to influence culture.

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Expansion of the Capetian lands from 987 to 1223. Arrows radiating from Paris point to the cathedrals inspired from Paris and Saint-Denis.

The blue area shown in 1154 shows the competing empire from the marriage of Eleanor of Aquitaine to King Henry II. The orange lands shown in 1223 are fiefdoms dependent upon the French Crown under king Philip Augustus. Animation from Stephen Murray at Mapping Gothic France.

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Among medieval cathedrals known to take centuries to complete, Notre-Dame was finished in short time. In just eight decades from c.1160 to c.1245, Notre-Dame emerged from the rubble in the completed form the public would recognize it today. Soon, neighboring towns in competition with Paris began erecting larger and taller cathedrals of their own. Among them, the powers centered on the cities of Chartres to the southwest, Amiens to the north, and Rouen to the northwest expressed their competition with Paris through their grander cathedrals. Not to be outdone, from 1220 to 1225 the Parisians rebuilt the entire upper levels and vaults of Notre-Dame to be taller, more luminous, and more ornate than before. The powers at Chartres, Amiens, and Rouen were soon crushed in battle and became the allies of an increasingly centralized French empire.
The public interprets cathedral construction as an act of devotion to God. The fine materials, craftsmanship, and physical challenges of construction symbolize the builders’ devotion, or gratitude for God listening to their prayers. The more expensive the project and the more difficult the construction, the greater the finished cathedral becomes as a symbol of sacrifice. Medieval stories often speak of the devout paying penance for their sins by dragging carts of heavy cathedral stones from quarry to building site. Or when the cathedrals faced structural collapse, natural disasters, and frequent fires, builders and clergy read these events as God expressing his dissatisfaction that their project was not good enough.
Less often does the public see the sacred built environment as an expression of political power, or as a tool of diplomacy and nation building. For the church to somehow be caught up in earthly affairs of wealth building, land investments, tax collection, and power squabbles seems vulgar and a distraction from the higher sacred mission. Cathedral construction required massive fundraising and tax collection efforts, the mobilization of thousands of laborers, and the sale of indulgences (donations to the church in exchange for certificates promising to reduce the donor’s punishment in the afterlife). As Notre-Dame of Paris reveals, construction cannot be separated from larger political events.
At every step in the history of the Capetians, monarchs sponsored building projects and used their power to carry out the political agenda of the church. Louis IX was made a saint for leading the Crusades to retake the Holy Land and its trade routes from Islam. The Sun King Louis XIV relied on the papal Cardinal Mazarin during his earliest years in power. And the ill-fated Louis XVI refused to share the monarchy and church’s monopoly on power with the people, causing the middle and working classes to wage the French Revolution.
The French Revolution asserted that government’s right to rule does not descend down from God and the church, as monarchs had claimed for centuries. Instead, political legitimacy flows up from the people, their right to vote, and their support for the elected government. Skepticism in the religious basis for political power, coupled with the Enlightenment belief that science and human reason alone can unlock social progress and the project of democracy, re-centered society on a new foundation. Church and state were separated, and with that Notre-Dame fell into a half-century of decay and abandonment.
In the French Revolution, Notre-Dame and hundreds of other French churches were abandoned, desecrated, and often demolished for the value of their building materials. Notre-Dame was confiscated from the church and transformed into a “Temple of Reason,” while most of its statuary was destroyed. The statues of 28 Biblical kings on Notre-Dame’s west façade were mistaken as French because their robes were modeled after Capetian kings. And so they were pulled down with ropes and decapitated by the mob in the city square. Not until the mid nineteenth century was Notre-Dame restored by Viollet-le-Duc with a new spire, new windows, new carvings, and restoration efforts sometimes so extensive that the cathedral surviving today is as much a product of the medieval era as it is a nineteenth-century creation. Notre-Dame began to emerge as a symbol of the French culture, identity, and nation.
Notre-Dame’s fire on 15 April 2019 reminded the public once again of architecture’s role in shaping and symbolizing national identity. The fire was as much a loss of architecture and cultural heritage as it was a threat to the French identity. The cathedral’s fire-damaged vaults and wooden roof turned to ashes symbolized an interrupted continuity with history. The cathedral had survived hundreds of years through plague, world wars, and revolution, as if symbolizing the continuity and purity of the French language, culture, and history. And now this link with history and the origins of the modern French nation was severed.
The efforts to rebuild Notre-Dame “as it was before” reveal the larger misconception that there is such a thing as a pure and original state. Pre-modern builders and patrons interpreted fires and natural disasters as innovation opportunities to rebuild what was lost as bigger and better than before, and often with the latest building techniques and architectural style. The church that stood at the site of future Notre-Dame, and which was demolished to build the current cathedral, was itself hundreds of years old and dating back to the late Roman Empire. And yet medieval audiences demolished it all the same with the confidence that what they built would be better than what was there before. Past generations at Notre-Dame viewed the cathedral and history as something fluid that could be embellished and improved through cycles of demolition. As late as the nineteenth century, Viollet-le-Duc imagined and added new details to the cathedral that never, in fact, existed.
Just days after the fire, architects submitted dozens of proposals to rebuild the site. Preservationists instead decided to rebuild the cathedral with the same pre-modern techniques, materials, and interior wooden roof trusses. Is contemporary art and culture so impoverished of beauty that contemporary society is incapable of enriching Notre-Dame with the building techniques and aesthetics of the modern era? Do we no longer believe in the forward path of progress, and must therefore pause the appearance of Notre-Dame the way it was?
The fire revealed that there are, in fact, two cathedrals: the physical cathedral built as a symbol of the French state and faith; and then the cathedral of our memories, with all the personal meanings visitors drew from their experience of the space. The two cathedrals are not the same because the meanings and symbolism we assign Notre-Dame in our memories are different from the cathedral’s intended purpose. The medieval clergy and kings never intended to create a symbol of the modern French state, of Victor Hugo’s literature, or of international Christianity. Yet Notre-Dame’s ability to acquire new meanings and identities through time speaks to the fact that this cathedral is a living work of art. With or without the physical cathedral, the Notre-Dame of our imaginations, of art, of literature, and of the millions of souvenir photographs will continue to live. At least in the collective imagination, Notre-Dame is immortal.

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Fire on 15 April 2019

A Drop of Water

Walking along Newark’s Pequannock Aqueduct from source, to tap, to sewer

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The general public views rural, suburban, urban, and industrial areas as being separate with different land uses, populations, and landscapes. The rural reaches and forests of northwestern New Jersey exist outside the imagination of Newark residents, as if these green mountain lakes with WASPy names have nothing to do with their lived urban experiences in the concrete and asphalt jungle. For the suburban and rural residents of West Milford, Ringwood, Wanaque, Bloomingdale, Kinnelon, Rockaway, Jefferson, Hardyston, and Vernon where Newark’s water supply originates, the experiences and troubles of Newark seem similarly distant, as if the quality of their forest oasis has nothing to do with the health outcomes of Newark residents. However, Newark’s century-old system supplies a half million people with some of the cleanest water in the country and invisibly knits together the fates of diverse communities along its buried path.

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Handmade drawing of Newark’s Pequannock water supply system, dated December 1892
The red line traces the path of the aqueduct from start at the Macopin Intake to end at South Orange Avenue. Green is the area of the watershed. The red graph beneath charts the relative height of the aqueduct above sea level at each point in the route. The aqueduct does not flow in a continuous downhill slope. Rather it hugs the ground just below the surface.

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Map of Newark water supply system in 1946, showing the Pequannock system opened 1892 (lower left) and Wanaque system opened 1930 (upper left). View full size map from Newark Public Library website.

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Over winter 2021, I documented the route of the Newark aqueduct from its origins in West Milford Township to its terminus in Newark Bay. I trace the path of Newark’s 26-mile-long aqueduct and 63-square-mile Pequannock Watershed and 94-square-mile Wanaque Watershed on the interactive map below.

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Click on water features to display details of name, dimensions, or volume.

■   Watersheds
■   Reservoirs (7 total)
~~ Aqueducts (~55 miles total)

■   Towns supplied with Newark water (~10)
■   Towns relying on Newark sewers (48)
~~ Main sewer interceptor (~ 28 miles total)
      Along path of Passaic River from Paterson to New York Harbor via Newark

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When American cities started gathering millions of woodland acres and building hundreds of miles of aqueducts in the nineteenth and early twentieth centuries, water supply was an expensive undertaking and a point of civic pride. The opening of New York’s first water supply of the Croton Aqueduct in 1842 was the largest and most expensive project by a single city in American history. Ten years earlier, New York City suffered its deadliest cholera epidemic due to poor sanitation and foul water, which left 3,515 dead out of a population of 250,000. (The equivalent death toll in today’s city of eight million would exceed 100,000.) With recent memories of death and trauma on New Yorkers’ minds, the opening of the city’s water supply was a public holiday with parades the length of lower Broadway and a giant fountain erected in front of City Hall. Along the new aqueduct’s path, brick and granite gatehouses, stone markers, and aqueducts modeled after those of Rome and antiquity advertised the otherwise invisible presence of the investments made below. Many of the sites along the route became tourist attractions in their own right with the weekend carriage crowd riding uptown to the future sites of Central Park and the New York Public Library. There they soaked in nature and appreciated the austere beauty of towering dams and powerful gates that released water downstream.
With similar fears of industrial contamination and water-borne disease, Newark’s water supply opened decades later in 1892. Like New York City, Newark was suffering from bouts of cholera for decades. Manufacturers in the “silk city” of Paterson upstream polluted Newark’s water supply downstream on the Passaic River. Unwilling and unable to invest in cleaner supplies from distant locations as New York City had done decades earlier, Newark suffered 107 typhoid deaths per 100,000 people in 1890. Fearing future death and predicting massive population growth, Newark leaders and industrialists (among them the city’s dozens of beer brewers who needed clean water) demanded change. At the cost of six million dollars, building a clean water supply at the Pequannock Watershed was the largest and most expensive project in Newark history, more than two times the size of the city’s 2.5 million dollar annual budget. Like the Croton system designed for one million customers when Manhattan had only had 330,000, Newark’s Pequannock water supply was designed for over 500,000 customers in a city of only 250,000. The Wanaque System was added by 1930 at a cost of 25 million, more than doubling the water available to Newark. Along the path, brick gatehouses and buildings dressed as neoclassical villas guided the flow of water. The image of Newark’s water supply is, therefore, as much a reflection of where the city was as a prediction of what the city would become. The external ornament and attention to quality materials invested in Newark’s water in the nineteenth and early twentieth centuries reveal the novelty of the technology, and the fact that for centuries Americans could not take clean water for granted.
After the September 11 attacks, and even for decades earlier, the presence of sensitive water supply infrastructure is no longer advertised aboveground. The razor wire perimeter fencing and warning signs that now surround Newark’s water supply hint at society’s evolving relationship with the land. The architecture once designed to welcome visitors is now closed off and patrolled by guards and security cameras for fear that people would poison their own water. Swimming and powered motorboats are both prohibited in Newark’s watershed for fear of pathogens and oil slick seeping into drinking water. The aboveground features of the underground aqueducts are no longer proudly labeled with carved stone, as they would have been when the system first opened. The public assets that once belonged to society at large still belong to the public, but their existence is now opaque and hidden away for its own safety. The six billion dollars and fifty years New York City spent building “Water Tunnel No. 3” has no visible fingerprints aboveground even though it is the largest water infrastructure project in American urban history. The public passes by unaware of how their tax dollars are spent behind the unmarked bombproof and airtight doors that guard the water tunnels carved 500 feet below. Newark is little different.

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April 1892 plans of the Macopin Gatehouse. The original water supply to Newark was so clean that the water was unfiltered. As water quality standards increased and as runoff from new suburban development encroached on the watershed, this gatehouse was demolished for the water treatment facility now here.

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Humanizing the 2,000 square mile watershed and aqueduct system that provides nine million New Yorkers with the cleanest water in America, architectural photographer Stanley Greenberg writes in Waterworks: A Photographic Journey through New York’s Hidden Water System:
Soon I came to think of the system as an underground organism, like the giant fungus now regarded as the largest living thing on earth. [….] Eventually I became able to ‘sense’ the water system. Sometimes it was because of the way the road was paved, or the type of fencing along the roadway. I knew which buildings were part of the water system, whether or not they were marked.
Along the path of Newark’s aqueduct, features are still visible aboveground. From little bends in the road to the occasional barbed wire fence, one can “sense” the downward flow of water to Newark. In the lakes and streams of Newark’s watershed, the water supply is left uncovered. The water flows its natural course downstream in the prehistoric riverbed as it has since the Ice Age. At the Macopin Intake in West Milford, the towering mass of a windowless brick building intercepts the pristine river and sucks the water in to be treated, chlorinated, and injected with a cocktail of chemicals. Now sanitized, the water is piped the rest of the way underground. Any new contamination after this point would endanger thousands of lives. Contamination and pollution are existential threats facing any water supply. A few miles further down, the aqueduct skirts under the abandoned location of Nike Missile Site NY-88, an abandoned Cold-War era military installation to intercept nuclear missiles from Communist countries “hostile to American values.” The pair of four-foot diameter brick, iron, and steel conduits snake their way 280 vertical feet downhill at the average rate of about ten vertical feet for each horizontal mile travelled. The water passes beneath roads, golf courses, and green lawns of unsuspecting suburban residents. In some parts, the aqueduct is encapsulated in a raised dirt embankment. Walking along the raised dirt road offers views over fences into the fresh mowed lawns, garages, and children’s swing sets of suburban families unaware that the lifeblood of a half million urban people passes beneath their feet. At the occasional interval, a metal pipe painted green with a mushroom shaped cap points out of the ground. The little green pipes relieve pressure and aerate the water to keep it fresh. Putting one’s ear to the pipe as if it were a stethoscope, the throbbing pulse of flowing water is audible. At other points, a mysteriously vacant but well-maintained lot on a street full of expensive homes hints that something is below. The presence of signs warning of the steep $500 fine for illegal dumping and the absence of realtor signs selling this land reveals that something unnamed and important must flow underground. Nearby, occasional road markers are spray-painted blue on the asphalt so that new roadwork does not accidentally puncture the aqueduct when digging. There are at least five streets in different towns all named in honor of what is buried beneath: Pipeline Path in Pompton Lakes, Aqueduct Avenue in Pequannock, Reservoir Drive in Woodland Park, Reservoir Drive in Cedar Grove, and Reservoir Place in Belleville. The aqueduct continues borrowing under Wayne, Totowa, Nutley, Belleville, and a handful of monotone suburbs known to most people only as the names of numbered exits on the highway.
As the water nears its destination, the suburban landscape changes to the empty lots and corner bodegas of inner city Newark. At this point, the main aqueduct gradually narrows as smaller pipes splinter off at each intersection to serve the city’s approximately 30,000 addresses. Finally, at the intersection of South 8th Street and South Orange Avenue, the old aqueduct ends at the “Reservoir Site Townhouse Development.” The name of this privately-owned public housing project is the only remaining hint of the former use of this site, where a sloping brownstone embankment once stored nine million gallons of water. Across the street, a three-floor brick water quality testing lab with limestone details has a neoclassical entrance with the words carved above: “Bureau of Water: Meter Laboratory.” The water-testing lab was abandoned and is now a non-governmental community health center. The loss of these public assets, and the neighborhood’s gradual population loss, hints at the larger retreat of government responsibility for protecting the public. While water was once a public asset advertised with civic architecture, the responsibility for water supply – and, with this responsibility, the health of thousands of water customers – is now tasked to semi-private and for-profit agencies that charge higher rates. The name of these water multinationals slip off the tongue and sound like the kind of slick words a team of consultants from the Wharton Business School would dream up: Veolia, Suez, Aqua America, and Aquarion Water. New Jersey, Idaho, and Connecticut, in fact, rank highest in the country for the percentage of their public water supply that is privatized, over 35%.
Running a few feet beneath each water line is the wider pipe of the city sewers. The two systems run in concert with each other, one whisking in fresh water and the other flushing wastewater away sight unseen. Rainwater from city streets mixes with the polluted water of houses and businesses and continues flowing over 230 vertical feet downstream to Newark’s sewage treatment plant in the meadowlands. Over thirty miles from where it entered the system, the water exits the system as it entered it—through the vast and chemical-intensive technologies of water purification. The brown slurry is pumped into basins the shape and depth of a swimming pool, where solid matter settles to the bottom. The remaining water is pumped off into treatment tanks resembling the steel drums used to store vast quantities of propane and natural gas. It is strange that Newark’s facility for water decontamination should be so close to and look so similar to the gas storage tanks of Shell Oil across the street, a company responsible for untold water contamination and environmental destruction. Down the street is the county jail where immigrants and inmates are incarcerated as a source of income for the Essex County government. In a fitting irony, much of the $42.7 million revenue generated from the county jails in 2019 was pumped back upstream to maintain and preserve the county’s hundreds of acres of parks, forests, and mountain lakes. One jail visitor writes: “There’s more drugs in there than on the street. It is located right across the street from a garbage dump. The smell in the air, especially in the summer, is absolutely rancid.” In a fitting twist of fate, the source of Newark’s water supply on a quiet country road with McMansions in West Milford and the destination of this water in an industrial wasteland are both named Doremus Road and Doremus Avenue, respectively, in honor of the Newark mayor responsible for building the system.
Water trickles down from the wealthy bedroom communities of northern New Jersey through progressively less wealthy towns, through the low-income community of Newark, and finally past the jail where society’s weakest members and immigrants are held captive. More than a few of these immigrants, no doubt, lived nearby and commuted out to the affluent suburbs to work on the green lawns and sewer systems whose effluent returns to Newark and which they must now smell in jail. At least 200,000 of these white-collar workers commuted in to Newark pre-pandemic, and extract their wealth from this city. From many of their backyards laced with fertilizers and insecticides, water returns to Newark. As the warning on many a suburban manhole reads: “No Dumping Drains to Waterway.” We live in a society divided on fault lines of income, race, and location. The journey of Newark’s water through diverse communities is a reminder that, however divided and segregated our society, the need and the right to water cuts across lines of class, race, and geography. This ends our journey from rural to urban through the suburban landscape of New Jersey.

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Newark water supply air valves, June 1892

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Related

A history of the Wanaque water supply from the Wanaque Public Library
A history of the Newark water supply from the Newark Public Library

Notre-Dame of Paris Construction Sequence

Developed with Stephen Murray, medieval architectural historian at Columbia University
As featured in:
1. Notre Dame’s official website
2. Notre-Dame de Paris: Rebuilding a Legacy, hosted April 2021 by the French Embassy, view recording
3. Notre-Dame de Paris: Restoring a Gothic Masterpiece, hosted May 2021 by the Los Angeles World Affairs Council and Town Hall, view recording

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1. Construction time-lapse

This construction time-lapse illustrates the history of Notre-Dame from c.1060 to the present day, following ten centuries of construction and reconstruction. The film was created in the computer modeling software SketchUp, based on hand-drawn image textures. The ink drawings of nineteenth-century architect Viollet-le-Duc were scanned and applied to the model surfaces, as if to transform the two-dimensional artwork into the three-dimensional digital. I believe computer models should have a certain handmade quality.

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Music: Pérotin, Viderunt Omnes

View animation with music only.

Read text of Stephen Murray’s audio narration.

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2. Virtual reality computer model

Explore the interior and exterior of Notre-Dame in virtual reality.
Give thirty seconds for browser to load. Link opens in new window.
Complete model of Notre-Dame inside and out. Download includes simulation of cathedral construction sequence. Model was peer reviewed for accuracy by scholars at Columbia University’s art history department and at the Friends of Notre-Dame de Paris.

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Fire on 15 April 2019

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3. Computer model and construction sequence sources

– Dany Sandron and Andrew Tallon. Notre-Dame Cathedral: nine centuries of history.
– Eugène Viollet-le-Duc. Drawings of Notre-Dame. From Wikimedia Commons.
J. Clemente. Spire of Notre-Dame. From SketchUp 3D Warehouse.
– Eugène Viollet-le-Duc and Ferdinand de Guilhermy. Notre-Dame de Paris. From BnF Gallica.
– Caroline Bruzelius. “The Construction of Notre-Dame in Paris” in The Art Bulletin. From JSTOR.
– Michael Davis. “Splendor and Peril: The Cathedral of Paris” in The Art Bulletin. From JSTOR.

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4. Exterior still images from model

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6. Interior still images

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7. Dynamic angles

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Homesteads to Homelots

The history of New Jersey suburbs as told through five data visualizations

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View of the city from the suburbs, author’s panoramic drawing of suburbs with urban skyline in the distance

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“The state of New Jersey offers an ideal setting in which to analyze the distinctive residential landscape of mass suburbia. [….] In time, 70 percent of the state’s total land area would qualify as suburban, so that by the turn of the twenty-first century New Jersey and Connecticut shared the distinction of being the nation’s most suburbanized states.”

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– Lizabeth Cohen, “Residence: Inequality in Mass Suburbia” in A Consumer’s Republic, p. 197.

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Northern New Jersey has long been central to the history of America’s suburban growth. From America’s oldest suburban developments to its most homogeneous to its most diverse, New Jersey’s 565 municipalities span the full portfolio of suburban living arrangements. New Jersey is unique in the sheer number of municipalities, each with its own elected leaders, school district, police, fire, and land use policies. As a result of inefficient and often duplicate public services in competing suburbs, New Jersey has some of the highest property taxes and cost of living in the country. This problem is not unique to New Jersey; it affects the country at large in dozens of other places. So the story of New Jersey makes for a powerful and revealing case study of larger trends in American suburban history.
This analysis examines New Jersey census data from 1940 to 2010. It is not the end point or a full analysis. Instead, each of these data visualizations plots a direction for future research. Telling history through maps and census data reveal the history of a larger region and country.

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Method

With data from the US Census Bureau, I extracted details on the population of every New Jersey municipality from 1940 to 2010, the period of greatest suburban growth. With spatial data on municipal boundaries from the NJ Office of GIS, I plotted the census data onto the map of municipal boundaries. This allowed me to see spatial patterns and to produce heat maps of population change over time. The spatial data also revealed the surface area of each municipality, which allowed me to calculate the historical population density of each municipality as a function of municipal population divided by municipal surface area. You can browse all the data visualizations or download the open source data here from Tableau. These data visualizations represent analysis of about 13,560 data points for 565 municipalities over eight censuses.

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1. Population loss vs. gain

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The map below reveals that every urban area in New Jersey lost population from 1950 to 2000. Meanwhile, the majority of rural areas gained population to become commuter suburbs. Wedged between the metropolises of New York City with 8.4 million residents and Philadelphia with 1.6 million, New Jersey has no cities with over 300,000 people. Thousands of white-collar workers live in the state’s suburbs and commute out of state for work, at least a quarter million people per weekday pre-pandemic. New Jersey is therefore more of a bedroom community than any other American state. The map below shows the scale of suburban population growth with areas that gained population colored in green. The darker the shade of green the greater the population gain from 1950 to 2000. At the same time, almost every major New Jersey city was losing people. The darker the shade of red the greater the population loss. This map produces two parallel stories of urban decline vs. suburban growth.

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Hover over data points to reveal details.

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Unsurprisingly, the rural parts of the state with the farthest commuting distance from New York City and Philadelphia experienced the least population growth. Instead of becoming suburbs, the farmlands in the northwestern corner of the state that once provisioned New York City markets with food reverted to forest during the twentieth century. At the same time, Central Jersey’s richest and most fertile farmland – along the line of the Northeast Corridor between New York City and Philadelphia – became suburbs. The farms here were pushed farther away, such that, by the end of the twentieth century, New York City food is supplied from thousands of miles away. New Jersey’s nickname of the “Garden State” once referred to the state’s rich agriculture and farms. Today, this name has an unintentional double meaning, as the only gardens left are the green suburban lawns in the ever-expanding crabgrass frontier.

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2. Link between population densities and suburban growth

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From 1950 to 2000, a total of 52 New Jersey cities lost about one million white residents and gained about 400,000 Blacks and Hispanics. As whites moved out, other ethnic groups moved in. The flight of urban whites to the suburbs happened across twentieth-century America.
In contrast to the population decline of New Jersey cities, a total of 513 towns and boroughs gained around four million people from 1950 to 2000. New Jersey’s suburban population growth was through a combination of whites arriving from cities, whites arriving from other states, and the natural birth rate during “baby boomer” generation. The average population density per square mile of places that lost people in this period was 6,400, while places that gained people contained on average 2,100 people per square mile. New population growth has been occurring in once rural areas that historically had low population densities. In other words, sprawl. Almost all of New Jersey’s population and economic growth in the second half of the twentieth century was concentrated in lower-density suburban areas, often at the expense of the cities where wealth was traditionally concentrated.

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Hover over data points to reveal details.

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Horizontal axis ranks places by population loss or gain (logarithmic scale). Vertical axis ranks places by population density in 1950 (linear scale). Dots are sized according to population in 1950. Red dots are, on average, larger cities that lost population. Green dots are, on average, smaller suburbs that gained population. All the largest cities with the higher population densities, that is, all the largest dots (with the exception of Union City) lost population to neighboring suburbs. The higher the population density, the greater the magnitude of twentieth-century population loss due to decentralization. Notice how high-density cities with large populations form one red cluster, while low-density suburbs with small populations form a separate green cluster.

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3. Resistance to municipal annexation

In the late nineteenth and early twentieth centuries, dozens of American municipalities were consolidated into larger urban areas. For instance, the 1898 consolidation of Manhattan, Bronx, Brooklyn, and dozens of small farming hamlets in present-day Staten Island and Queens produced the contemporary city limits of New York City. This 300 square mile area allowed for New York City’s urban expansion, the elimination of otherwise duplicate municipal services, and the central organization of rapid transit, zoning, and land use policies. The metropolitan-scale vision and infrastructure projects of Robert Moses would have been impossible otherwise.
Municipal consolidation never went as far in New Jersey, with a few exceptions. The state’s second largest city of Jersey City with a population of 266,000 (2018) was formed in 1870 by merging the small towns of Hudson City, Bergen City, and Greenville. The state’s largest city of Newark with a population of 282,000 (2018) was reformed in 1905 by annexing neighboring Vailsburg. Yet, as a whole, the state’s geography remained divided with its largest cities unable to increase in population or expand their political power through municipal annexation. Throughout much of the nineteenth century, and even before the era of rapid suburban growth, the trend in New Jersey was already toward decentralization with the subdivision of larger towns into ever-smaller units and school districts. For instance, if Newark covered the same surface area in 2019 as it did in 1790, it would be the eighteenth largest city in the US in 2019 with an estimated population of 800,000, ahead of Denver and behind Seattle. Instead, Newark is the country’s third oldest city behind Boston and New York, but is only the 73rd largest in population. Suburban towns straddle it on all sides, isolating a majority Black community in the inner city from the prosperity of surrounding suburbs. In contrast to cities in most other developed countries, most American cities are concentrations of poverty ringed by wealthier areas.
Cities like Newark rank higher in their regional and economic influence than their small populations and limited surface area would lead one to believe. Newark is the state’s economic, shipping, rail, airport, and higher education hub, with more of these key industries concentrated in Newark than in any other New Jersey city. But suburban policies resistant to centralized government and municipal annexation have thwarted Newark’s deserved political influence. Kenneth Jackson describes consolidation in Crabgrass Frontier: “Without exception, the adjustment of local boundaries has been the dominant method of population growth in every American city of consequence. [….] Viewed another way, if annexation had not been successful in the nineteenth century, many large cities would have been surrounded by suburbs even before the Civil War.”
Unfortunately, while the rest of the country was moving toward annexation in the nineteenth century, New Jersey experienced municipal fragmentation. For instance, the more urban and higher density borough of Metuchen is entirely surrounded by the less urban and lower density town of Edison. At one time, these two places were part of a single and larger township called Woodbridge. As railroads began linking city and country in the mid nineteenth century, urban residents started moving to Woodbridge and formed an early commuter suburb. The existing residents of Woodbridge were largely Democrat farmers, while the new commuters were largely Republican businessmen. The farmers were content with few municipal services, while the new commuters demanded paved roads, water supply, sewers, and street lighting. In the resulting conflict between rural and suburban, the small suburb of Metuchen clustered around its commuter train station broke off from the larger municipality. At 2.85 square miles, Metuchen is the size of postage stamp on the map of New Jersey, while more suburban Edison is like a doughnut that surrounds Metuchen on all sides.
There are at least thirty towns like Metuchen across the state, known as “doughnut towns” because one municipality encircles another. The average size of these towns is less than three square miles. This unique quirk of New Jersey geography hints at the longstanding conflict between rural and suburban. As the state evolved from a land of homesteads into a sea of platted suburban home lots, existing farmers resented their state’s changing geography and urbanizing economy. In many other states, rural farmers went along with the newly arrived residents of commuter suburbs and accepted greater investment in municipal services. In New Jersey, rural residents did not; they insisted on autonomy, independence, and decentralized government. Hence, New Jersey splintered into so many hundreds of places with their own strong, separate, and long-established civic identities. As a result, cities like Chicago and New York cover enough surface area that a Black or Hispanic family can move to a better neighborhood nearby without being in a new suburb. Yet, New Jersey municipalities are so fragmented that a change of address almost inevitably means a change of town with new laws, new taxes, a new civic identity, and a new school district. The table below outlines these municipal enclaves.

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Hover over data points to reveal details.

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The county maps from John P. Snyder’s History of New Jersey’s Civil Boundaries are revealing. They illustrate the division of New Jersey into ever-smaller municipal units. The map below shows, for instance, the original vs. contemporary municipal boundaries in Hudson and Bergen County along the Hudson River. Colored in green are original boundaries vs. the present-day ones in black.

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4. The municipal fabric before suburban growth

New Jersey’s municipal framework for suburban growth was laid out early, even centuries before its suburbs grew. The earliest settlers and colonists in America believed in local control of government. In the New England farming hamlet of colonial days, all eligible white male taxpaying citizens participated in direct democracy. These voters were tasked with passing new laws, improving roads, and maintaining common lands. Over 200 years of early American growth, almost all of the land within the eight states of New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, Pennsylvania, and New Jersey were divided into “incorporated communities.” This produced hundreds of New England towns with relative autonomy from higher authorities.
By contrast, the rest of America followed a different development path from the original thirteen British colonies and contained more “unincorporated communities” – that is land and people not part of a local and direct democracy. People in unincorporated communities are still full citizens with voting rights, but the management of their municipal services, like roads and water, is often tasked to a larger and more distant power, like the county government. Several unincorporated villages might also be grouped as part of a larger municipality.
New Jersey’s belief in local control and direct democracy resulted in the early incorporation of municipalities, and a likely stronger sense of local identity than in other regions. The chart below shows that most of New Jersey’s municipalities were laid out in two sweeps. In 1798, 104 rural and farming towns were incorporated as part of the “Township Act of 1798.” Decades later, new residents in the state’s growing commuter suburbs like Metuchen demanded more municipal services like water, fire, and sewer. When residents of the existing farming areas objected, dozens of boroughs broke away to form bedroom communities in the second sweep of new municipal incorporations. The peak year was 1894 when 36 new towns and boroughs were created along the Bergen County commuter rail lines linking northern New Jersey to New York City. However, during the high period of suburban growth from the 1930s to the present-day when New Jersey gained 4.8 million people, a mere twelve new places were incorporated. In other words, the political geography of New Jersey suburbs was laid out before the mass exodus of Americans from cities to suburbs in the twentieth century.

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New Jersey’s anti-urban outlook and politics are no recent or twentieth-century phenomenon. Nor did these fears of central administration come about during the suburban age. In fact, the groundwork for New Jersey’s rapid twentieth-century suburban growth was laid in the state’s earliest days.

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5. Conclusion: New Jersey is still in the suburban age

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After 1980, thousands of Young Urban Professionals (“Yuppies”) returned from the suburbs to live in the cities. However, any post-1980 urban population gain was usually not enough to counter pre-1980 population loss. While a few smaller New Jersey cities regained earlier losses from 1980 to 2010, new population growth and new housing construction were concentrated in suburban areas on the whole. New Jersey cities have grown, but they are not growing as fast as the suburbs surrounding them.

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Mixed results of “back to the city”

Color key
Urban growth since 1980 does not offset earlier losses
Urban population growth since 1980 offsets earlier losses
No net population loss 1950 to 1980

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This table above shows that of the twenty-four largest New Jersey cities in 1950, sixteen had a net population loss from 1950 to 1980. In the period 1980 to 2010, only seven of these sixteen cities have seen population growth (Jersey City, Paterson, Elizabeth, Passaic, Hoboken, Perth Amboy, and Kearny). Even among these seven cities, only five of them have seen enough population growth to offset pre-1980 population losses (Paterson Elizabeth, Passaic, Perth Amboy, and Kearny). In addition, two of the twenty-four cities have even seen a higher rate of population loss from 1980 to 2010 than from 1950 to 1980 (East Orange and Irvington).
Viewed another way, of New Jersey’s twenty-four largest cities, only nineteen have seen an increase in the rate of population growth after 1980. But among these nineteen cities, population growth has always been from the replacement of whites with largely lower-income immigrants from Latin America. The only two cities yuppies and middle class whites were uniquely responsible for “turning around” through gentrification were Hoboken and Downtown Jersey City, both of which still had a net population loss from 1950 to 2010. Immigrants, more than wealthy young people, are the new drivers of urban growth in New Jersey.
The table below shows that New Jersey’s six leading cities of Newark, Jersey City, Paterson, Elizabeth, Trenton, and Camden were always majority white until 1950-1960 when thousands of whites fled for the suburbs. The demographic trend lines have not reversed. Only small numbers of younger and wealthier whites have returned to cities, which is not enough to offset the continued white flight to the suburbs. In other words, the urban population of New Jersey cities has stagnated since 1980. Population gains have been small and not enough to offset continuing population loss. Because many cities have not made up for their earlier losses of people and economic power, the story of “Back to the City” can only be applied to a limited number of cities in New Jersey.

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Hover over data points to reveal details. Hispanics not counted in graph because they were not measured on US census until 1970.
White population loss from 1930 to 2000: 330,047 in Newark; 222,306 in Jersey City; 93,838 in Camden; 89,514 in Paterson; 87,446 in Trenton; and 42,486 in Elizabeth

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Hover over data points to reveal details. Hispanics not counted in graph because they were not measured on US census until 1970.

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Taking these charts into account, Newark lost 330,000 whites from 1930 to 2000. Since then, population loss has slowed; the city gained a mere 400 whites from 2000 to 2010, a drop in the bucket. In the same period of 1930 to 2000, Jersey City lost 222,000 whites, Paterson lost 90,000, Trenton lost 87,000, Camden lost 94,000, and Elizabeth lost 42,000. This brings the estimated white population loss of the state’s six leading cities to about 866,000. If including smaller places that also lost their white population, such as Union City, Clifton, Atlantic City, and Plainfield, the urban population loss comes to well over one million people. At the same time, the population replacements of Blacks and Hispanics have not been as large as the population losses of whites. Cities across New Jersey are smaller and less central to the state’s economy than they were before the auto era.
Despite construction of new light rail systems and improvements to existing rail infrastructure, over 80% of New Jersey residents still commuted to work by car. Even in Hudson County, with excellent transit connections in Hoboken and Secaucus, 66% of commutes were still by car in 2000. New Jersey might be rich in transportation options and railroads, but most of its built environment of sprawling suburbs was not built with these “urban” transit modes in mind.
In other words, the image “Back to the City” with young people riding on bikes and public transit is more of a New York City story than it is a Trenton, Newark, Camden, or Atlantic City story. “The Garden State” was and remains suburban despite surface appearances of a renewed interest in cities. As economic historian Leah Boustan writes in Competition in the Promised Land: “Even though black in-migration to northern cities has tapered off, relative black wages have not rebounded in the North and white flight has not reversed course (despite media reports of a ‘return to the city’)” (p.9). Much of the public thinks that young people prefer to live in cities, and that the age of suburban sprawl is over in the age of the climate crisis. Yet two centuries of urban growth have failed to turn New Jersey into a state whose residents think of themselves as urban, even though it is densely populated and an integral part of greater New York City. The path of decentralization that New Jersey has followed for two centuries will guide it for decades more.
Is “Back to the City” part of a larger cultural shift, or is it a short-term illusion that the pandemic reversed when thousands of high-income young people moved back to the suburbs? If the history of New Jersey is any guide, the suburbs are alive and well and here to stay. As Robert Fishman writes in Bourgeois Utopias, a 1987 study of the origins and future of America’s suburbs:
“The ‘gentrification’ phenomenon has been highly visible yet statistically insignificant. It has done as much to displace low income city dwellers as to benefit them. The late twentieth century American environment thus shows all the signs of the two nations syndrome: one caught in an environment of poverty, cut off from the majority culture, speaking its own languages and dialects; the other an increasingly homogenized culture of affluence, more and more remote from an urban environment it finds dangerous.”

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Levittown, America’s most famous mass-produced suburb, was replicated in Pennsylvania, Long Island, and New Jersey

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Sources

Data for all municipalities:

Population of all municipalities from 1940 to 2000, from NJ State Data Center report (table 6, p. 26-51)
Shapefile of municipal boundaries with 2010 population of each municipality, from NJ open data
List of municipalities by year incorporated, from Wikipedia

Three data sources above are merged into these visualizations, posted to Tableau for free download

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Data for New Jersey’s six leading cities:

Populations and races of NJ’s six largest cities from 1810 to 1990, from US Census Bureau working paper (table 31, p.78-79) and this documentation page
Populations and races of NJ’s six largest cities for 2000 and 2010, from Census Viewer website because above table was only up to 1990

Two data sources above are merged into this visualization, posted to Tableau for free download

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Other sources:

NJ population density map, from Census Viewer website
Analysis of transportation patterns, from NJ Department of Transportation report
Satellite imagery of the entire state in 1930 offers a comparative view of the rural “Garden State” before suburban sprawl, from NJ Office of GIS

 

Further reading:

Leah P. Boustan. Competition in the Promised Land: black migrants in northern cities and labor markets. Princeton: Princeton University Press, 2017.
Lizabeth Cohen. A Consumer’s Republic: the politics of mass consumption in postwar America. New York: Vintage Books, 2003.
Robert Fishman. Bourgeois Utopias: the rise and fall of suburbia. New York: Basic Books, 1987.
Kenneth T. Jackson. Crabgrass Frontier: the suburbanization of the United States. Oxford, England: Oxford University Press, 1985.
John P. Snyder. The History of New Jersey’s Civil Boundaries, 1606-1968. Trenton: Bureau of Geology and Topography, 1968. (link)