Park Tower (Chicago)

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Coordinates: 41°53′49″N 87°37′31″W / 41.89694°N 87.62528°W / 41.89694; -87.62528

Park Tower
Park Tower Chicago.png
Park Tower seen from ground level.
Park Tower (Chicago) is located in Chicago
Park Tower (Chicago)
Park Tower (Chicago) is located in Illinois
Park Tower (Chicago)
Park Tower (Chicago) is located in the US
Park Tower (Chicago)
General information
Status Complete
Type Hotel, Condominium
Location Chicago, Illinois, U.S.
Completed 2000
Height
Architectural 844 feet (257.3 m)
Technical details
Floor count 70
Floor area 835,624 sq ft (77,632.0 m2)
Design and construction
Architect Lucien Lagrange Architects
Park Tower rooftop with Art Deco architecture details
Park Tower detail - the restaurant (NoMi), Chicago Water Tower to the left

Park Tower, located at 800 North Michigan Avenue in Chicago, in the U.S. state of Illinois, is a skyscraper that was completed in 2000. At 844 feet (257 meters) tall with 70 floors — 67 floors for practical use, it is the twelfth-tallest building in Chicago, the 43rd-tallest building in the United States, and the 83rd-tallest in the world by architectural detail. It is one of the world's tallest buildings to be clad with architectural precast concrete (the Transamerica Pyramid Building in San Francisco is taller). It is one of the tallest non-steel framed structures in the world—it is a cast-in-place concrete framed structure. This building was originally intended to be 650 ft (200 m) tall. But later, the ceiling heights were increased allowing it to reach 844 ft (257 m).

The building occupies a footprint of 28,000 square feet (2,600 square meters). Because of the small footprint and the fact that it is a non-steel-framed concrete building, this is the first building in the United States to be designed with a tuned mass damper from the outset. While other skyscrapers in America have anti-sway systems, they were always added later. A tuned mass damper counteracts wind effects on the structure. (The 300-ton damper is a massive steel pendulum hung from four cables inside a square cage.) Because of its massive weight, the damper has inertia that helps stabilize the building from swaying in the wind.

Designed by Chicago architectural firm Lucien Lagrange Architects, Park Tower is a mixed-use tower. As the name suggests, the lower portion holds a Park Hyatt Hotel while the upper levels contain luxury condominiums.

The building contains 193,000 sq ft (17,900 m2) of hotel space (202 rooms), 475,000 sq ft (44,100 m2) of residential space, 20,000 sq ft (1,900 m2) of retail, and 92,000 sq ft (8,500 m2) of parking. Levels 9, 19, and the crown are mechanical areas. Floors 2 to 22 are hotel spaces, Floors 23 to 55 are residential apartments and Floors 56 to 70 are private condominiums. With its location on the prestigious Magnificent Mile, Park Tower is also home to the acclaimed restaurant NoMi.

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