70299379 - Willis Tower (formerly Sears Tower) with The Ledge Observation deck, Chicago, Illinois, USA70299352 - Public transport railway tracks, Willis Tower (formerly Sears Tower) in the background, Chicago, Illinois, USA70397592 - Tourists in the all glass balcony skydeck observation deck view the Chicago skyline103rd floor of the Willis Tower previously the Sears Tower71034414 - Chicago River and towers of the West Loop area, Willis Tower, formerly Sears Tower in the background, a raised disused railway bridge in the foreground, Chicago, Illinois, United States of America, North America71052565 - Chicago River and towers of the West Loop area, Willis Tower, formerly the Sears Tower in the background, a raised disused railway bridge in the foreground, Chicago, Illinois, United States of America, North America71043592 - Skyscrapers including Willis Tower, formerly the Sears Tower, in Downtown Chicago by the Chicago River, Chicago, Illinois, United States of America, North America
