Greenbelt Knoll
Philadelphia, Philadelphia County, Pennsylvania
Marker Inscription
The first racially integrated housing development in Philadelphia, and a model for the nation, was built in 1956 by Morris Milgram, a nationally recognized developer and civil rights proponent. Prominent building and landscape architects, including Robert Bishop, Margaret Duncan, and Louis Kahn, created Modernist houses in the natural setting of Pennypack Park. Original residents include Milgram, Rep. Robert N.C. Nix, & Rev. Leon Sullivan.
Erected by Pennsylvania Historical and Museum Commission
The Story
Built in 1956 amid the woods of Pennypack Park, Greenbelt Knoll was the first racially integrated housing development in Philadelphia — and a model for the nation at a time when housing discrimination was the norm. Developer Morris Milgram, a committed civil rights advocate, gathered noted architects, among them Louis Kahn, to design Modernist homes that blended into the natural landscape. Its first residents were themselves a statement, including Milgram, U.S. Rep. Robert N.C. Nix, and the Rev. Leon Sullivan.
Why it matters
Greenbelt Knoll proved that integrated, intentional community was possible during the era of segregated housing, making it a landmark in the American civil rights and fair-housing movements.
The story behind this marker
AI contextThe era
In the years after World War II, America built houses at a furious pace. Returning veterans, a booming economy, and cheap land at the edges of cities produced the great age of the suburb. But that new landscape came with a hard and often unspoken rule: neighborhoods were overwhelmingly segregated by race, enforced by custom, by lending practices, and by the deeds and agreements attached to the homes themselves.
Philadelphia was no exception. As new developments rose around the city in the 1950s, most were closed to Black families as a matter of routine, and housing discrimination was simply the way things were done. To build otherwise was not merely unusual — it was to stand deliberately against the current of the age.
That is the backdrop against which a small development took shape in 1956 in the wooded setting of Pennypack Park, on the northeastern edge of the city. Amid a nation sorting its neighborhoods by color, a handful of Modernist houses among the trees set out to prove another way was possible.
People & events
The development was Greenbelt Knoll, and it was the work of Morris Milgram, a nationally recognized developer who had made civil rights the mission of his business. He set out to create the first racially integrated housing development in Philadelphia — not as an afterthought, but as the entire point of the project.
Milgram gathered noted talents to design it, including building and landscape architects such as Robert Bishop, Margaret Duncan, and the celebrated Louis Kahn. Together they placed Modernist houses gently into the natural landscape of Pennypack Park, so that the homes seemed to belong among the trees rather than to conquer the land.
The first residents were themselves a kind of declaration. Alongside Milgram lived figures of real standing, including U.S. Representative Robert N.C. Nix and the Reverend Leon Sullivan. That such neighbors — Black and white, prominent and private — chose to live side by side, by design, was in 1956 a quietly radical act.
Its place in the American story
Greenbelt Knoll became a model for the nation because it answered a question many Americans assumed had only one answer. In an era when integrated housing was widely treated as impossible or undesirable, this small development showed that people of different races could choose to build a community together — intentionally, comfortably, and well.
That proof mattered far beyond one wooded corner of Philadelphia. The long American struggle over where people are allowed to live is inseparable from the broader civil rights and fair-housing movements, and demonstrations like this one gave those movements something powerful: a living example rather than an argument. It is one thing to say integration can work; it is another to point to a neighborhood where it did.
The marker also reminds us that civil rights history was made not only in courtrooms and on marches, but on ordinary streets and in the decision of families about where to make a home. Greenbelt Knoll stands as a landmark in that quieter front of the movement — the fight for the right to be neighbors.
If you visit
Set within the greenery near Pennypack Park, Greenbelt Knoll still feels like what it was meant to be: houses tucked among the trees, designed to sit lightly on the land. The Modernist lines and the wooded setting give the place a calm, deliberate character that rewards an unhurried look.
As you take it in, let the marker reframe what you're seeing. These are not just mid-century houses in a leafy pocket of the city — they are the physical form of a conviction, built at a moment when the choice to integrate a neighborhood carried real weight. The beauty of the setting and the courage of the idea are meant to be understood together.
For a road trip through Philadelphia's history, this is a stop away from the usual colonial trail — a chance to see the civil rights story written into a residential street on the city's northeastern edge. Come with respect for the families who chose to live here first, and you'll leave with a richer sense of how, and where, America's fight for fair housing was actually won.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
Plan your visit
NearbyMake a day of it — museums, food, and places to stay near this marker.
Museums & culture
- Illadelph Glass Gallery9.7 mi away · 68 North 2nd Street, Philadelphia, PA
- Betsy Ross House9.7 mi away · 239 Arch Street, Philadelphia, PA
- Muse Gallery9.7 mi away · 52 North 2nd Street, Philadelphia, PA
- Larry Becker Contemporary Art9.7 mi away · 43 North 2nd Street, Philadelphia, PA
- National Constitution Center9.8 mi away · 525 Arch Street, Philadelphia, PA
- Paradigm Gallery + Studio9.8 mi away · 12 North 3rd Street, Philadelphia, PA
Attractions
- Harbison's Dairy Milk Bottle7.8 mi away
- Philly Gun Range9.5 mi away · North Percy Street
- Elfreth's Alley9.6 mi away
- Penguin Park Exhibit9.6 mi away
- Camden Children's Garden9.7 mi away
- Butterfly House9.7 mi away
Food & drink
- 3J's Cafe9.8 mi away · 317 Market Street, Philadelphia, PA
- Bubble Tea Room9.8 mi away · 319 Market Street, Philadelphia, PA
- PrimoHoagies9.8 mi away · 304 Market Street, Philadelphia, PA
- Fork9.8 mi away · 306 Market Street, Philadelphia, PA
- Menagerie Coffee9.9 mi away · 18 South 3rd Street, Philadelphia, PA
- Independence Mall Cafe9.9 mi away · 50 North Independence Mall East, Philadelphia
Places to stay
- Holiday Inn Express Philadelphia E - Penns Landing9.5 mi away · 100 North Christopher Columbus Boulevard, Philadelphia
- Penn's View Hotel9.7 mi away · 14 North Front Street, Philadelphia
- The Philadelphia House9.7 mi away · 17 North 2nd Street, Philadelphia, PA
- Wyndham Philadelphia Historic District9.8 mi away · 400 Arch Street, Philadelphia, PA
- Apple Hostels9.9 mi away · 33 Bank Street, Philadelphia, PA
- Apple Hostels Philadelphia9.9 mi away · 32 South Bank Street, Philadelphia, PA
Places data © OpenStreetMap contributors. Hours and details change — call ahead.
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Related people
- · Morris Milgram
- · Louis Kahn
- · Robert N.C. Nix
- · Leon Sullivan
Themes & tags
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