Gallery: Sears Tower, don't look down

Children stand on "The Ledge" and look down through a glass floor 1,353 feet (412 meters) above Wacker Drive in Chicago.

Five-year-old Anna Kane (L) and four-year-old Sophie Allaway look through the glass floor of "The Ledge" 1,353 feet (412 meters) above the street in Chicago.

Sam Kane lays on the floor of "The Ledge