CHICAGO -- Video posted to social media showed cracks on the glass floor of The Ledge attraction at Willis Tower (formerly known as the Sears Tower) on Monday. The video was posted by a Skydeck ...

CHICAGO -- Video posted to social media showed cracks on the glass floor of the Ledge attraction at Willis Tower on Monday. The video was posted by a Skydeck visitor on Facebook. A spokesperson for ...

Alejandro Garibay CHICAGO (WPVI) -- The Willis Tower Skydeck's The Ledge cracked - but it's supposed to, according to a spokesperson, who said only the protective coating of the glass box that ...

The cracks formed after a group of visitors to the Skydeck at the Willis Tower stepped out on the Ledge, but Willis Tower officials said the glass itself did not crack, only the protective coating.