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 ...

CHICAGO (CBS) --Skydeck Chicago, the observation deck atop Willis Tower, the tallest building in Chicago, is celebrating its 50th anniversary. It was designed as a gift to the city of Chicago; an ...

CHICAGO — It was once the world’s tallest building, and it continues to be the king of Chicago’s skyline. Now, the Willis (Sears) Tower is celebrating a monumental birthday in a big way. The Skydeck ...