Name | Name:Arecibo Telescope | Name:Great Pyramid of Giza |
Height | Height:150 m, (492 ft) | Height:146 m, (479 ft) |
Location | Location:Arecibo, United States | Location:Egypt |
Year Constructed | Year Constructed:1963 | Year Constructed:c. 2560 BC |
Description | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. | Description:By 1439, the Great Pyramid had eroded to a height of approximately 139 m (456 ft). Tallest freestanding structure on land from c. 2560 BC to c. 1311 AD |