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Willis Tower
233 S Wacker Dr, Chicago, IL 60606, United States Phone: +1 312 875 0066 www.willistower.comAbout
Willis Tower is once the world's tallest building, Willis Tower (formerly known as Sears Tower) is still the USA's tallest building, and it's still way up in the clouds. Its observation platform - the Skydeck - draws 1.5 million people a year who are eager to.
