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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 ...
The tallest building in the city is the 110-story Willis Tower (also known as 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 ]
July 2009 - The Sears Tower is officially renamed Willis Tower. The same month, an attraction called the Ledge opens on the 103rd floor, with glass balconies and a view down 1,353 feet to the ...
The amount of material used in the building's construction resulted in a very stiff structure when compared to other skyscrapers, with a structural stiffness of 42 pounds per square foot (2.0 kPa) versus the Willis Tower's 33 pounds per square foot (1.6 kPa) and the John Hancock Center's 26 pounds per square foot (1.2 kPa). [82]
Stephen Greenwood Chicago's architecture is world famous, and while a river cruise is the best way to take in all of the structural details of the skyline, the observation deck of the Willis Tower ...
CHICAGO —With vaccinations ongoing and hope that wider reopening plans are in the near future, Skydeck Chicago at Willis Tower is making sure that when folks come out, they have a memorable new ...
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