Today the public had it's first crack to walk out on "The Ledge," the new glass balconies on the 103rd floor of the Sears Tower. Made entirely of glass, visitors walk out from the 103rd floor Skydeck on to the ledge and can see straight down 1,353 feet below. Here's a collection of photos from the Associated Press showing the new sensation in action. I freak out on the Guthrie Theater's "yellow box" glass floors that are like ten or 12 stories above ground, so I think I won't be going to "The Ledge" any time soon.