Top 20 Tallest Completed Buildings in the World
10. Willis Tower
Locale: Chicago, United States
Height: 1,451 feet
Completion Year: 1974
Previously known as Sears Tower is the first of its own kind, 108-storey. The design is beautifully crafted with black aluminum and bronze-tinted glare-reducing glass. It holds the record of being tallest ever for almost 25 years. Inspite of being so old it still has a place in the list is much wondrous.
