These are images straight out of a doomsday movie: a huge storm front is gathering over the US city of Chicago. Then hail follows and lightning strikes the Willis Tower. Warren Buffett keeps ...

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, and it's easy to see why. Occupying the 103rd floor – that's nine floors higher than 360 CHICAGO – of ...

Landmark opened in 1973 with original tenant Sears Roebuck & Co. CHICAGO, Illinois (CNN) -- Sears Tower is history. As of Thursday, the iconic Chicago, Illinois, skyscraper is now named Willis Tower.