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Chicago, Illinois
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The Ledge at SkyDeck Chicago extends 4.3 feet from the Willis Tower, allowing visitors to stand on a glass floor 1,353 feet above the ground. source: SkyDeck Chicago Official Website
The Willis Tower, formerly known as the Sears Tower, reaches a height of 1,450 feet, making it the third tallest building in the Western Hemisphere. source: Council on Tall Buildings and Urban Habitat
On a clear day, visitors can see up to four states from the SkyDeck: Illinois, Indiana, Wisconsin, and Michigan. source: SkyDeck Chicago Official Website
The Willis Tower was designed by architect Bruce Graham and structural engineer Fazlur Rahman Khan, and it was the tallest building in the world when completed in 1973. source: Encyclopedia Britannica
The building's bundled tube design was revolutionary at the time, allowing for both height and stability. source: Council on Tall Buildings and Urban Habitat
The Willis Tower is equipped with 104 elevators, including 16 double-decker elevators. source: Willis Tower Official Website
The SkyDeck was opened to the public in 1974, just a year after the completion of the Willis Tower. source: SkyDeck Chicago Official Website
