Willis Tower - Wikipedia

File:Willis Tower (Chicago) 30.05.2015.JPG - Wikimedia Commons

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file:Sears Tower.jpg - Wikipedia

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What was the point of building the Sears Tower, now called the Willis Tower, with an outside that looked like it was on fire, when it turned out to be one of

Willis Tower, Watch Dogs Wiki

File:Willis Tower.jpg - Wikipedia

Willis Tower - Wikipedia

Chicago, Illinois, USA. Willis Tower, formerly the Sear Tower built in 1973 was world's tallest structure (for 25 years), designed by Bruce Graham, sticks out from behind smaller downtown towers. United Airlines