• Tower House Lounge on Willis Tower’s 33rd floor is now available for private and semi-private events.
  • The perimeter of the Willis Tower contains columns that are spaced 15 feet (4.6 m) apart on their centers.
  • Until Taipei 101 was topped out in 2004, the Sears Tower held title to the world's highest roof and highest occupied floor.
  • The Willis tower follows a vertical tube design, inspired by cigarette boxes, which appears to mimic the figure of stacked boxes.
  • March 16, 2015 - The Blackstone Group announces it has signed a deal to buy Willis Tower for $1.3 billion.
  • The Willis Tower (formerly known as and commonly referred to as the Sears Tower) is a 108-story, 1,450-foot (442.1 m) skyscraper in Chicago.
  • The inspiration for Willis Tower’s glass-floor observation box came from the hundreds of forehead prints visitors left behind on Skydeck windows every week.
  • In 2021, SOM continued its 50-year stewardship of Willis Tower with a transformative renovation of the Ledge.
  • One of the most notable landmarks is The Willis Tower at 233 S Wacker Drive, which can be viewed from the 360 CHICAGO Observation Deck on the 94th floor of...