The Skyscraper Museum is devoted to the study of high-rise building, past, present, and future. The Museum explores tall buildings as objects of design, products of technology, sites of construction, investments in real estate, and places of work and residence. This site will look better in a browser that supports web standards, but it is accessible to any browser or Internet device.

CORE EXHIBIT ON PERMANENT DISPLAY

MANHATTAN MINI MODELS
Crafted by Michael Chesko


[DOWNLOAD Michael Chesko Mini Models Press Release]
CLICK HERE for WIRED Magazine article

The Museum's amazing mini-Manhattan models and their creator Michael Chesko are featured in this month's Wired Magazine's Design section. View dramatic photographs in the online article that juxtaposes New York models with other city models throughout the world, including the Shanghai Urban Planning Exhibition Center's model, which measures 6,500 square feet.

Two highly-detailed, hand-carved miniature wooden models of Downtown and Midtown Manhattan have been donated to The Skyscraper Museum by Arizona resident Mike Chesko, a 49-year-old retiree and devoted amateur model maker. In June, Chesko, his wife, son and niece drove cross-country to transport the precious panoramas to the museum and to see the real city at full scale. It was their first trip to New York.

Chesko's models measure 17-3/4 by 20 inches for the Lilliputian Lower Manhattan and 37 by 31 inches for Midtown. The scale of the model is 3/8 inch for every 100 feet, meaning that the 1,250 foot Empire State Building reaches only 4.7 inches tall. The tallest of the tiny buildings are the Twin Towers (still standing in this model) which soar a full 5.1 inches. These models are so small that ten city blocks can fit in the palm of your hand.

From childhood, Chesko spent his leisure time constructing models of imaginary cities. In the 1990s, he began to carve some of his favorite skyscrapers, including many in Lower Manhattan which he then began to place in a cityscape. By 2005, he had completed the entire area of Lower Manhattan from the southern tip to just north of City Hall Park.

In fall 2007, Chesko contacted The Skyscraper Museum with an offer to donate his models. Director Carol Willis’s enthusiasm gave him the inspiration he needed to complete a second model of Midtown that covers the area between 8th Avenue to the East River and extends from 25th Street to 60th Street. Aided by books, satellite maps, and the Museum's online visual archive, VIVA, Chesko spent many months carving hundreds of individual buildings, accurately representing these densely packed blocks. Often beginning work at around 7am and not finishing until midnight, Chesko carved and sanded the 382-block Midtown model. Sometimes he would complete four blocks in a single day.

The result of thousands of hours of dedicated labor and craftsmanship, Chesko's delightful miniature models of Manhattan are on public display for the first time at The Skyscraper Museum.

MAPS AND PHOTOGRAPHS OF LOWER MANHATTAN

Lower Manhattan in the Sixties was a mature business district trapped in the fitments of an earlier age. A corset of finger piers bounded the island's edge, constraining growth. The downtown waterfront had been rendered obsolete, first by larger ships with deeper drafts, and from the late 1950s, by containerization which drove shipping to relocate to the vast, vacant expanses of the New Jersey lowlands. Of 51 piers, only 18 were active in 1966. The remnants of the working waterfront still exaggerated congestion, as cargo was unloaded onto the street. Elevated highways intended to improve traffic flow further segregated the public from the rivers.

Image Credits:
Lower Manhattan, August 3, 1956
Thomas Airviews, Lower Manhattan
Collection of The New-York Historical Society

The reclamation and reinvention of the waterfront became a chief focus of plans for Lower Manhattan. Strategies included demolishing the decaying piers and enlarging the island, either by landfill, as at Battery Park City, or by platforming over the water, as intended, but not executed, on the East River. The low-rise, mostly 19th-century mercantile buildings that occupied the area adjacent to the piers were slated for demolition under the city's urban renewal policy. In their place, planners envisioned development zones of modern office buildings and new residential neighborhoods. The two business magnets were the World Trade Center complex and the South Ferry and Water Street district.

Image Credits:
Lower Manhattan, May 5, 1976
Thomas Airviews, Lower Manhattan
Collection of The New-York Historical Society


WORLD'S TALLEST BUILDING:
BURJ DUBAI

On the rise from the desert sands of Dubai, one of the seven United Arab Emirates along the southern shore of the Persian Gulf, is the world's tallest building: Burj Dubai. Released in January, the spire that stretches above its 160 stories of apartments and office suites will climb to 2,683 feet -more than twice the height of the Empire State Building.

The ambition to erect the world's tallest tower is as old as the ages, and like the pyramids or gothic cathedrals, Burj Dubai is an architectural and engineering marvel typical of its times. The burj -the word simply means tower in Arabic- represents the collective effort of ninety architects and engineers in the Chicago office of Skidmore, Owings & Merrill LLP and a team of consulting companies. An army of 3,000-6,800 construction workers labor daily on the site—or work night hours when seasonal temperatures of 100-120 degrees become too extreme.

Burj Dubai represents a new paradigm for the 21st-century supertall. Until the 1990s, the tallest skyscrapers were almost always giant office buildings, made of steel, and erected in United States. Today, like Burj Dubai, they are principally residential or mixed-use buildings made of concrete or composite and located in Asia or the Mideast.

Using 1:500 scale models, the design of Burj Dubai was optimized for wind through an iterative sequence of wind tunnel tests and design progressions such that the results were fed onto each step of the design. For these developmental tests, a rigid model on a dynamic base balance was used. As a result of these studies, major reductions in the wind loads and building motions were achieved.

Model on loan from RWDI, Inc.


THE TWIN TOWERS AND THE TWENTIETH CENTURY

Through several past exhibitions, The Skyscraper Museum has examined the history of the World Trade Center complex in its conception, design, and construction from the 1960s through the mid-1970s-- and their destruction on the morning of 9/11. A special section devoted to the Word Trade Center and rebuilding at Ground Zero occupies a portion of the Museum's galleries.

Upon their completion in 1971 and 1973, the Twin Towers of the World Trade Center were the tallest and largest skyscrapers in the world. Innovative engineering carried the structures to 110 stories- 1368 and 1362 feet (417 and 415 meters) -creating floors an acre in size, with more than 4 million square feet per building. Except for the contemporary Sears Tower in Chicago, nearly 100 feet taller, but slightly smaller in total area, no skyscraper has ever matched their scale.

To be both big and tall was a phenomenon of the 1960s and 1970s, the climax in the evolution of skyscraper size. The World Trade Center epitomized the ambitions of an era when faith in technology and a fascination with monumentality spurred designs for megastructures and urban master plans. New York’s skyline was on the rise, and modernity seemed to matter more than history. Still, considerable conflict surrounded the towers. Writing in The New York Times in May 1966, architecture critic Ada Louise Huxtable noted, "Who's afraid of the big, bad buildings? Everyone, because there are so many things about gigantism that we just don't know."

September 11, 2001 defines our memory of the Twin Towers, and the profound proportions of that tragedy continue to reverberate in New York and beyond. The question of size in the urban scheme remains a complex issue for the future of tall buildings everywhere. As new spires around the world exceed the sheer height of the supertalls of the seventies, none have surpassed the overall scale of the giants of the twentieth century, nor likely ever will.

The World Trade Center was the first skyscraper design to be tested in a boundary layer wind tunnel, which replicates natural wind. Air flow around tall buildings creates turbulence and eddies that can cause vibration or sway. These effects can be accurately predicted by three kinds of tests. Special highly accurate models are built to represent the building's form and nearby surroundings, often at a scale of 1:400.

A "pressure tap" model, as in the lower large photograph in this case, measures local pressures on the facade using hundreds of tiny tubes, or taps, connected to a computer.

A "force balance" model measures overturning of the entire building as wind gusts strike randomly.

An "aeroelastic" model, as in the upper large photograph in this case, also measures overturning, but includes the effect of the natural rate of rhythmic rocking back and forth, known as the building's period.

From these studies, the engineers were able to analyze and predict the definition of both the steady-state and the fluctuating wind pressures on the facade; the steady-state and dynamic behavior of a tall building in turbulent wind; and a quantification of the increase in street-level winds associated with the construction of a high-rise building. They also developed a new theory of the prediction of the breakage rate of glass subjected to the natural winds of the atmosphere.

While now standard practice in the technology of high-rise design, the pioneering effort for the World Trade Center required significant reconstruction of laboratory facilities. Ultimately, three different wind tunnels at three different labs were used: one in the United States (Colorado State University), one in the United Kingdom (National Physical Laboratory, Teddington), and one in Canada (The University of Western Ontario).


THE REBUILDING OF GROUND ZERO
The Freedom Tower

The Museum displays some of the proposed plans for the rebuilding of Ground Zero following 9/11, including a 10-foot scale model for the first proposed design for the Freedom Tower by Daniel Libeskind and SOM.

Completion: 1st quarter 2012
Height: 1,362 ft.; spire: 1,776 ft.; 84 stories
GBA: 3,500,000 sq. ft.
Developer: Silverstein Properties, Inc.
Development Manager: World Trade Center Properties, LLC; an affiliate of Silverstein Properties, Inc.
Architect: Skidmore, Owings & Merrill LLP
Structural Engineers: WSP Cantor Seinuk; Schlaich Bergermann und Partner
MEP Engineer: Jaros Baum & Bolles, Inc.
Construction Manager: Tishman Construction Corporation
Sustainability Consultants: Jaros Baum & Bolles, Inc.; Green Order
LEED Rating: Pending Gold

The Freedom Tower is being built according to World Trade Center Commercial Design Guidelines, including mandated Sustainable Design Guidelines that are unprecedented in their scope and depth. Click here to learn about the specific features and technologies employed in the Freedom Tower.

HISTORICAL CONSTRUCTION PHOTOGRAPHS

At the time of its completion in 1908, the City Investing Building was the largest building in the world in terms of interior space -it took up almost an entire city block! The building also stood on the same block as the world's tallest building of the time -the Singer Tower. The block where the City Investing Building previously sat is now 1 Liberty Plaza.

This photographic image shows the City Investing Building construction site, built between 1906 and 1908. Visible are the structure's steel skeleton, workers balancing on I-beams, and cranes lifting many tons of building material hundreds of feet in the air.

The photograph hangs at the top of the Museum's entrance ramp, which is designed to feel like you are walking on the steel I-beams used in the construction of skyscrapers. As a family, walk up and down the ramp and imagine you are balancing on steel beams hundreds of feet in the air! Also try standing in front of one of the photographs and looking up into the mirrored ceiling. It's as though you're standing at the bottom of the construction site, looking at the new skyscraper reaching up into the clouds.




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This program is supported, in part, by public funds from the New York City Department of Cultural Affairs.

This program is supported, in part, by public funds from the New York State Council on the Arts, a State Agency.