The world’s tallest skyscraper in 1973-1998. The building is 442 m high (tip is 527 m high) and has 110 floors. It has the tallest observation deck in USA at the height of 412.4 m.
| Location, GPS coordinates: | 41.87878 N 87.63593 W |
| Categories: | Government and office buildings |
| Values: | Architecture, Visual |
| Rating: |  (3.5 / 5) |
| Where is located? | North America, United States, Illinois, Cook County, Chicago, 233 S. Wacker Drive |
Willis Tower on the map
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 office tower with 110 floors. It was the world's tallest skyscraper in 1973-1998.){kind=link}