| Name | Name:Willis Tower (Formerly Sears Tower) | Name:Tokyo Sky Tree | 
| Height | Height:442 m, (1,450 ft) | Height:634 m, (2,080 ft) | 
| Location | Location:Chicago, United States | Location:Tokyo, Japan | 
| Year Constructed | Year Constructed:1973 | Year Constructed:2011 | 
| Description | Description: | Description:A very tall Self supporting tower . In 2013 it was the tallest Self supporting tower in the world. | 
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