Tallest Skyscraper

November 12, 2013 - 12:35 PM
FILE - This combination made from file photos shows Willis Tower, formerly known as the Sears Tower, in Chicago on March 12, 2008, left, and 1 World Trade Center in New York on Sept. 5, 2013. The new World Trade Center tower in New York knocked Chicago's Willis Tower off its pedestal as the nation's tallest building when an international panel of architects announced Tuesday, Nov. 12, 2013, that the needle atop the skyscraper can be counted when measuring the structure's height. (AP Photos/File)