Willis Tower: Chicago, Illinois
Willis Tower used to be called the Sears Tower until a naming rights change in 2009 by Willis Group Holdings. The Tower is 108 stories and a total of 1,451 feet high. When it was completed in 1973 it was the tallest building in the world, a title it held for almost 25 years. More than one million people visit it every year, as it’s one of the most popular tourist destinations in Chicago.Willis Tower: Chicago, Illinois
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