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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 ...
Read Fast Facts from CNN about Willis Tower, formerly the Sears Tower, located in Chicago. ... Facts. The Sears Tower was the world’s tallest building until 1996, when it was surpassed by the ...
At the time, the Willis Tower held first place in the second and third categories, the Petronas Towers held the first category, and the original WTC North Tower held the fourth (height to tip) category with its antenna. [19] In 2000, however, a new antenna mast was placed on the Willis Tower, giving it the record in the fourth category.
Willis Tower: 442.1 1,450 108 (+ 3 below ground) Chicago United States: 1974 Tallest building in the world from 1974 till 1998 as Sears Tower [39] 27 KK100: 441.8 1,449 98 (+ 4 below ground) Shenzhen China: 2011 [40] 28 Guangzhou International Finance Center: 438.6 1,439 101 (+ 4 below ground) Guangzhou 2010 [41] 29 111 West 57th Street: 435.3 ...
The trussed tube concept was applied to many later skyscrapers, including the Onterie Center, Citigroup Center and Bank of China Tower. [41] Willis Tower, engineered by Khan and designed by Bruce Graham, was the tallest building in the world for 25 years. The design introduced the bundled tube structural system.
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Sears Tower (now the Willis Tower) Tallest building in Chicago, Illinois — For 20 years, the Sears Tower held the record for the world's tallest building. Completed in 1973, the 110 stories high building is almost half a kilometre tall. And it still holds the record for having the world's highest antenna.
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