A touch of glass can add a fresh new perspective and a whole lot of fear to the already soaring heights of the Sears Tower (now known as the Willis Tower). The Sears Tower Glass Balconies extend from near the building’s peak at 1,353 feet. While the view from the Sears is an unparalleled way of seeing the city of Chicago below, we could not bring ourselves to take a step on to these balconies. While they’ve added a new dimension to the Sears Skydeck experience, we’ll enjoy it from a distance, thank you.
(via Amazing Glass Buildings: 15 Creative Uses of Glass in Architecture)