Name | Name:Two Prudential Plaza | Name:Bent Pyramid |
Height | Height:303 m, (994 ft) | Height:101 m, (332 ft) |
Location | Location:Chicago, United States | Location:Egypt |
Year Constructed | Year Constructed:1990 | Year Constructed:c. 2605 BC |
Description | Description: | 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 |