The John Hancock Center is a 100-story, 1,127-foot (344 m) tall skyscraper, located at 875 North Michigan Avenue in the Streeterville area of Chicago, Illinois, United States. It was constructed under the supervision of Skidmore, Owings and Merrill, with chief designer Bruce Graham and structural engineer Fazlur Khan. When the building topped out on May 6, 1968, it was the tallest building in the world outside New York City. It is currently the fourth-tallest building in Chicago and the seventh-tallest in the United States (after One World Trade Center, the Willis Tower, the Trump Tower Chicago, the Empire State Building, the Bank of America Tower, and the Aon Center). When measured to the top of its antenna masts, it stands at 1,506 feet (459 m). The building is home to offices and restaurants, as well as about 700 condominiums, and contains the third highest residence (above adjacent ground level) in the world, after the Trump Tower (also in Chicago), and the Burj Khalifa (in Dubai).