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 108 stories and 1,450.58 feet.
Video of "the ledge", AFTER THE JUMP…
Flashback! I was growing up in Chicago and about the age of these kids when the Sears Tower opened in 1973. (clip via dlisted)
