| Name | Name:Tokyo Sky Tree | Name:Bent Pyramid | 
| Height | Height:634 m, (2,080 ft) | Height:101 m, (332 ft) | 
| Location | Location:Tokyo, Japan | Location:Egypt | 
| Year Constructed | Year Constructed:2011 | Year Constructed:c. 2605 BC | 
| Description | Description:A very tall Self supporting tower . In 2013 it was the tallest Self supporting tower in the world. | Description:Angle of slope decrease during construction to avoid collapse. It was the tallest freestanding structure on land from c. 2605 BC to c. 2600 BC | 
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