The fifty-storey building rises 756 feet (230 m) in the Loop and was completed in 1992, on the site of Chicago's Greyhound Bus Station.

At night, the top of the building facing east and west is flooded with light, creating a memorable presence on the Chicago skyline.

The building was originally intended to have a twin at 181 N. Clark Street, but the plan has been dropped twice: initially, after the completion of the first tower, and then a second time in 2001 after the 9/11 terror attacks.

[2] A multi-level parking structure currently occupies the space where the north tower may someday be constructed.

It has a basement-level pedway connection westward to the south-east corner of the James R. Thompson Center's food court.