Willis Tower timeline

  • Sears Tower Completed

    Willis Tower, formerly named Sears Tower, is a 108-story 1,451 feet (442 m) skyscraper in Chicago, Illinois. At the time of its completion in 1974,... Read more

  • Sears Tower Renamed Willis Tower

    CHICAGO, Illinois (CNN) -- Sears Tower is history. As of Thursday, the iconic Chicago, Illinois, skyscraper is now named Willis Tower. At... Read more