John Hancock Center

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For the tower in Boston, see John Hancock Tower.

John Hancock Center
John Hancock Center viewed from Lake Michigan in August 2015
General information
Status	Complete
Architectural style	Structural Expressionism
Location	Chicago, Illinois, U.S.
Coordinates	41.8988°N 87.6230°WCoordinates: 41.8988°N 87.6230°W
Construction started	1965
Completed	1969[1]
Cost	$100,000,000[1]
Owner	The Hearn Company
Height
Architectural	1,128 ft (343.7 m)[2]
Tip	1,500 ft (457 m)[2]
Roof	1,127 ft (344 m)
Top floor	1,054 ft (321 m)[2]
Observatory	1,030 ft (314 m)[2]
Technical details
Floor count	100[2]
Floor area	2,799,973 sq ft (260,126 m2)[2]
Lifts/elevators	50, made by Otis Elevator Company[2]
Design and construction
Architect	Fazlur Rahman Khan[3] Skidmore, Owings and Merrill
Developer	John Hancock Insurance
Main contractor	Tishman Construction Co.
Website
www.360chicago.com
References
[2][4][5][6]

The John Hancock Center is a 100-story, 1,128-foot^[7] (343.7 m) supertall skyscraper at 875 North Michigan Avenue, Chicago, Illinois, United States. It was constructed under the supervision of Skidmore, Owings and Merrill,^[7] with chief designer Bruce Graham and structural engineer Fazlur Khan.^[8] When the building topped out on May 6, 1968,^[1] it was the second tallest building in the world and the tallest outside of New York City. It is currently the fourth-tallest building in Chicago and the eighth-tallest in the United States, after One World Trade Center, the Willis Tower, 432 Park Avenue, the Trump Tower Chicago, the Empire State Building, the Bank of America Tower, and the Aon Center. When measured to the top of its antenna masts, it stands at 1,500 feet (457 m).^[9] The building is home to offices and restaurants, as well as about 700 condominiums, and contains the third highest residence in the world, after the Burj Khalifa in Dubai and the Trump Tower in Chicago.^[10] The building was named for John Hancock Mutual Life Insurance Company, a developer and original tenant of the building.^[11]
From the 95th floor restaurant, diners can look out at Chicago and Lake Michigan. The Observatory (360 Chicago),^[12] which competes with the Willis Tower's Skydeck, has a 360° view of the city, up to four states, and a distance of over 80 miles (130 km). The Observatory has Chicago's only open-air SkyWalk and also features a free multimedia tour in six languages.^[13] The 44th-floor sky lobby features America's highest indoor swimming pool.^[14]