Rem Koolhaas: Delirious New York and the Culture of Congestion

Key points

Koolhaas wrote Delirious New York (1978) before building anything and called it a retroactive manifesto for Manhattan.
The culture of congestion turns extreme density into a creative force rather than a problem to solve.
Rockefeller Center is for Koolhaas the city within the city, with multiple functions stacked on a single block.

Delirious New York (1978), by Rem Koolhaas, is a provocative interpretation of Manhattan as a delirious city. Written before Koolhaas had built anything — he called it a retroactive manifesto —, the book explores how extreme density and the vibrant character of the city have shaped its architecture and urbanism, and how New York became a laboratory where the boldest ideas about building and planning were put into practice. It is a city, he argues, where the limits between reality and fantasy blur until they produce a unique metropolis.

Understanding Delirious New York

The delirious essence of New York comes from its capacity to integrate contradictory elements: chaos and order, the everyday and the extraordinary. Koolhaas begins at Coney Island, the amusement park where in the early twentieth century the technologies of fantasy that later colonised Manhattan were first tested. Since its founding the city has been a space of unlimited opportunity that draws people from all over the world seeking to reinvent themselves, and that dynamism pushed architects and planners to invent solutions for an unprecedented density. The skyscraper did not answer only a lack of land: it symbolises the city's urge to outdo itself, in physical and symbolic height.

The culture of congestion

The book's key concept is the culture of congestion. Far from seeing congestion as a problem, Koolhaas considers it the fundamental element of New York's character: the layering of activities, people and buildings produces an unmatched urban energy in which physical proximity fosters constant interaction and exchange. Congestion is a creative force that drives the city's development and feeds its delirious spirit, and architecture does not seek to manage it but to exploit it: the 1811 grid and the skyscraper are the two machines that make it possible, every block a world and every floor a different programme.

Rockefeller Center as urban delirium

Rockefeller Center is the example Koolhaas analyses in most detail as a concrete manifestation of urban delirium. It combines commercial, cultural and recreational functions in a single complex — offices, theatres, a skating rink, roof gardens — and creates a micro-city within the city. It represents the idea that architecture in New York does not serve only to solve practical needs but to project ambitious and often utopian visions of what urban life can be, and that those visions get built rather than staying on paper.

Reinvention: Manhattanism

New York's evolution is tied to its capacity to adapt and reinvent itself. Throughout its history it has passed through phases of growth, crisis and renewal, always pushed by a delirious impulse towards the future, and that constant transformation has let it remain relevant and vibrant in the face of every challenge. Architecture and urbanism gave shape to the chaos and turned it into a functional and exciting structure: that is what Koolhaas calls Manhattanism, a doctrine nobody wrote and everybody applied.

Delirious New York offers a fascinating view of the relationship between architecture and urbanism in one of the world's most emblematic cities. Koolhaas shows how New York turned its density, its congestion and its chaos into sources of creativity and energy, and how the delirious and the rational coexist in a metropolis that keeps surprising its inhabitants and those who watch it. For contemporary urbanism, obsessed with density, it is as useful a reading today as it was in 1978.

Urban form Density Height and skyscrapers Energy Thinkers Rent

Guide · Density, zoning and urban form

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Density Urban density is the number of people, homes or built floor area per unit of land.
Height and skyscrapers Height is the most visible and least decisive dimension of urban form: a skyscraper concentrates floor area on little land, but surrounded by emptiness it yields less density and less life than a six-storey block.
Energy The urban energy transition is the shift from a city that burns fossil fuels —in cars, boilers and power stations— to one that moves and heats with renewable electricity, consumes less and produces part of what it uses on its own roofs.
Thinkers Urban thinkers are the authors —geographers, sociologists, architects, economists, journalists— whose ideas explain the city: from Engels and Howard to Jacobs, Lefebvre, Harvey, Sassen or Gehl.

Frequently asked questions

What is Delirious New York by Rem Koolhaas?

A 1978 book that reads Manhattan as a delirious city in which the grid, the skyscraper and extreme density produced, without a plan, a culture of congestion; Koolhaas called it a retroactive manifesto because it describes a theory the city had already put into practice.

What does the culture of congestion mean?

The idea that Manhattan's density and superimposed uses are not a problem but the engine of its architecture and urban life, and that each skyscraper reproduces the whole city vertically, as Rockefeller Center shows.