Name | Name:Pyramid of Djoser | Name:Arecibo Telescope |
Height | Height:62 m, (203 ft) | Height:150 m, (492 ft) |
Location | Location:Egypt | Location:Arecibo, United States |
Year Constructed | Year Constructed:c. 2650 BC | Year Constructed:1963 |
Description | Description:Tallest freestanding structure on land from c. 2650 BC to c. 2610 BC | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. |