Name | Name:Willis Tower (Formerly Sears Tower) | Name:CN Tower |
Height | Height:442 m, (1,450 ft) | Height:553 m, (1,814 ft) |
Location | Location:Chicago, United States | Location:Toronto, Canada |
Year Constructed | Year Constructed:1973 | Year Constructed:1973–1976 |
Description | Description: | Description:Tallest freestanding structure on land from 1975 to 2007. Remains the tallest in the Western Hemisphere. |