CHICAGO - APRIL 23: The Hancock Tower and Observatory on April 23, 2008 in Chicago, Illinois. This 100-story, 1,127-foot tall skyscraper has America's highest indoor swimming pool on the 44th floor.
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CHICAGO - APRIL 23: The Hancock Tower and Observatory on April 23, 2008 in Chicago, Illinois. This 100-story, 1,127-foot tall skyscraper has America's highest indoor swimming pool on the 44th floor.