The Hancock Center at 875 N. Michigan Ave. in Chicago, Illinois, is a one-hundred-story, 1,127 ft. (344 m)-tall skyscraper designed by structural engineer Fazlur Khan of Skidmore, Owings and Merrill and, when completed in 1969, was the tallest building in the world outside New York City. It is the third-tallest skyscraper in Chicago and the fourth-tallest in the United States, after the Sears Tower, the Empire State Building and the Aon Center. When measured to the top of its antennae, it is 1,500 ft. (457.2 m) . The building is home to offices and restaurants, as well as about 700 condominiums and contains the highest residences in the world. This skyscraper was named after John Hancock.

The 95th floor has long been home to a fine restaurant, the latest incarnation being called "The Signature Room on the 95th Floor." While patrons dine, they can look out the windows overlooking Chicago and Lake Michigan. The Hancock Center's observation facilities compete with the Sears Tower's Skydeck across town. The Hancock Center is in a commercial district, while the Sears Tower is in the financial district. The Hancock Center 94th floor observation deck displays exhibits about the city of Chicago. Maps explain the view in each direction and a special meshed-in area allows the visitors to feel the winds 1,030 feet (314 m) above ground level. The 44th-floor skylobby features America's highest indoor swimming pool.