Collected by Michelle Totel-Riley
233 S Wacker Dr, Chicago, IL 60606, USA
Willis Tower—originally known as the Sears Tower—was the world's tallest building for 23 years until it was unseated in 1996 by the Petronas Twin Towers in Kuala Lumpur. The 110-story skyscraper is still mighty impressive. Its "bundled...
111 S Michigan Ave, Chicago, IL 60603, USA