An curved arrow pointing right. The Ledge is a glass box on the 103rd floor of the Willis Tower, the eighth-tallest building in the world and the tallest building in the Western hemisphere.

More than 1.7 million people make their way to Willis Tower's Skydeck Chicago each year ... this platform is made entirely of glass – even the floor. Travelers also liked the video screens ...

the observation deck on the 103rd floor of the Willis Tower that gives brave viewers a sweeping view of the Chicago skyline. The Ledge is composed of five glass-floor balconies, each of three ...