Yesterday, the Sears Tower (soon to be renamed the Willis Tower) debuted four retractable glass bays that jut out from the skyscraper's 103rd floor. Each is designed to hold five tons. The Sears Tower remains the nation's tallest building at...
Yesterday, the Sears Tower (soon to be renamed the Willis Tower) debuted four retractable glass bays that jut out from the skyscraper's 103rd floor. Each is designed to hold five tons. The Sears Tower remains the nation's tallest building at...