Aerial view of Chicago, Illinois. The black skyscraper is Willis Tower, previously known as Sears Tower, a Chicago landmark - PICRYL - Public Domain Media Search Engine Public Domain Image
Skyline with Lake Michigan, view from Skydeck, Willis Tower, formerly Sears Tower, Chicago, Illinois, USA, North America Stock Photo - Alamy
Visitors to the new 412-meter high observation deck Skydeck, Willis Tower, formerly named Sears Tower, Chicago, Illinois Stock Photo - Alamy
Chicago skyline seen from Willis Tower Stock Photo - Alamy
View From Willis Tower Skydeck, Chicago, IL, oscarpetefan
Tourists in glass balcony skydeck observation deck view Chicago skyline103rd floor of the Willis Tower Sears Tower Stock Photo - Alamy
20+ Willis Tower Sky Deck Stock Photos, Pictures & Royalty-Free Images - iStock
Illinois, Chicago, Willis Tower (aka Sears Tower). Tourists out on the Ledge on Sky Deck Chicago Stock Photo - Alamy
Skyline with John Hancock Center in front of Lake Michigan, view from Skydeck, Willis Tower, formerly Sears Tower, Chicago, Illinois, USA, North Stock Photo - Alamy
SkyPan Int'l shoots 1400' liftoff for Willis Tower Skydeck Reel Chicago News