British insurance broker Willis Group Holdings Ltd. will lease space in the iconic Sears Tower, changing the building's name to Willis Tower. Video courtesy of Fox News.

It was designed by Architect William W. Boyington. Chicago is home to the Willis Tower, formerly known as Sears Tower, which is one of the largest skyscrapers in the world. The 110-story building ...

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 ...