Timed tickets are required and advance purchase is recommended. Standard entry fees are covered by Go City Chicago Cards. Restaurants, shops and restrooms can be found inside Willis Tower.

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 ... with vouchers for tickets to ...

Left photo: Sears Tower became the tallest building in Chicago, surpassing the John Hancock Center, seen in the background, when construction continued in November 1972. (Charles Osgood/Chicago ...

CHICAGO (CBS) -- "Think about it. There must be higher love. Up in the tower formerly known as Sears above." With apologies to Steve Winwood, Kygo, and Whitney Houston, that paraphrased lyric ...

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.