Willis Tower is a 110-story trophy office tower containing a total enclosed area of approximately 4.56 million gross square feet (SF) and has a rentable area of 3.8 million SF. Willis Tower’s 4.56 million gross square feet would cover 105 acres if spread across one level. This is the equivalent of 16 city blocks in Chicago. Within the building, there are 25 miles of plumbing, 1,500 miles of electric wiring, 80 miles of elevator cable, and 145,000 light fixtures. The building weighs more than 222,500 tons, and it cost more than $175 million to build.

The Property’s rentable space consists of 107 office levels (including eleven levels containing mechanical spaces and broadcast equipment), one above grade retail level, one lobby grade retail level and three below grade levels that contain a mix of office, retail, storage space, service area and a garage. The property contains 160 parking spaces located in five levels in an executive parking garage.