Name | Name:Arecibo Telescope | Name:Meidum Pyramid |
Height | Height:150 m, (492 ft) | Height:94 m, (307 ft) |
Location | Location:Arecibo, United States | Location:Egypt |
Year Constructed | Year Constructed:1963 | Year Constructed:c. 2610 BC |
Description | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. | Description:Shortly after completion Meidum Pyramid collapsed due to bad design/instability and is now 65 m (213 ft). It was the tallest freestanding structure on land from c. 2610 BC to c. 2605 BC |