Willis Tower in Chicago
| Height | 442 m (1,451 ft) ▼ |
| Tip Height | 527 m (1,729 ft) |
| Building Mass Height | 442 m (1,451 ft) |
| Floors | 108 |
| Construction Year | 1974 |
| Structural Form | supertall building |
| Main Usage | commercial office |
| Status | completed |
| Architectural Style | international style |
| Address | 233 South Wacker Drive |
| City | Chicago |
| Country | United States |