Overview
Willis Tower is a 110-story skyscraper in Chicago's Loop and one of the tallest buildings in the Western Hemisphere.
History
The tower was completed in 1973 as the Sears Tower and was the tallest building in the world for about 25 years. It was renamed Willis Tower in 2009, when glass boxes called the Ledge were added to the Skydeck.
Today
The tower is a busy office building and tourist attraction, with heavy demand for lobby and high-rise security.
Compiled October 2026. History is summarized for general interest; check primary sources for research. This landmark is local context, not an employer or job listing.