This list of tallest buildings in Chicago ranks skyscrapers in the U.S. city of Chicago, Illinois by height. The tallest building in Chicago is the 108-story Sears Tower, which rises 1,451 feet (442 m) in the Chicago Loop and was completed in 1974. It also stands among the tallest buildings in the United States, and the world. In addition, the Sears Tower had the most floors of any completed building in the world, and stood as the world's tallest completed skyscraper when measuring to pinnacle height, rising 1,730 feet (527 m) with the addition of its western antenna. The second- and third-tallest buildings in Chicago are the Aon Center and the John Hancock Center, respectively. As of June 2008[update], the John Hancock Center, with 49 floors of condominiums, held the world record for the highest residence. In addition, Chicago has several buildings containing at least 100 floors. (Read more...)