The Willis Tower is a 110-story skyscraper that displays a striking black aluminum and bronze-tinted glass facade. This combination creates a reflective matte finish that enhances its visual appeal. The building’s unique bundled tube structure provides structural support, maintaining its iconic shape. The tower’s design emphasizes its height and bold elegance. At different heights, three main rectangular structures flank the building that leads up to the top. A prominent white tower at the pinnacle elevates the building’s landscape.
- Bruce Graham (Skidmore, Owings & Merrill) - Structural engineer Fazlur Rahman Khan
Image 1, 2, 3, & 5: https://www.architecture.org/online-resources/buildings-of-chicago/willis-tower Image 4: https://www.som.com/projects/the-ledge-at-skydeck-chicago/
- 1970 Construction starts. - 1971 Excavation of cite starts. - 1972 steel frames start being implemented and put in place. - 1973 Mechanical, Electrical, interior work, & windows are implemented. - May 3, 1973 construction finished. - Opened September 1973 to the public.
Chicago, Illinois, Unites States of America.