Built 2005.
111 South Wacker Drive is a high-rise office building located in Chicago, Illinois. Completed in 2005 and standing at 681 feet, the 51 story blue-glass structure is one of the tallest in the city. It sits on the site of the former U.S. Gypsum Building, one of the tallest buildings in Chicago to be demolished.
From Wikipedia, CC BY-SA 4.0.
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