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The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110- story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest ...
Aon Center. / 41.88528°N 87.62139°W / 41.88528; -87.62139. The Aon Center (200 East Randolph Street, formerly Amoco Building) [ 3] is a modern supertall skyscraper located in the Northeast corner of the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership ...
The tallest building in the city is the 110-story Willis Tower (formerly the Sears Tower), which rises 1,451 feet (442 m) in the Chicago Loop and was completed in 1974. [2] [3] Sears Tower was the tallest building in the world upon its completion, and remained the tallest building in the United States until May 10, 2013. [4]
1974 - The Skydeck opens for visitors. 1994 - Sears, Roebuck & Company sells the building to reduce its debt. 1996 - The Petronas Twin Towers surpass the Sears Tower in height to become the world ...
1974 Formerly known, and still commonly referred to, as the Sears Tower. It was the tallest building in the world from 1974 until 1998. Tallest building constructed in the world in the 1970s. [12] [13] 111 West 57th Street: New York City: 1,428 ft (435 m) 84 2021 [14]
Sears referred to it as a "city within a city" and it served as company headquarters until the second Sears Tower lanced its way into the Chicago sky as the world's tallest building in 1974.
Willis Tower (formerly Sears Tower) 527 1,729 1974 Skyscraper Office, observation, UHF/VHF transmission, later United Airlines HQ [3] United States Chicago: Tallest building in the world 1974–1998 (by structural height). 17
The nearly-identical buildings were the tallest in the world until being surpassed by Chicago's Sears Tower in 1973. The north tower stood just six feet taller than its counterpart.