Giza - Pyramid of Cheops

The Pyramid of Cheops, the largest of the group and indeed the most massive of all the Egyptian pyramids, was built by Cheops or Khufu, and was known to the ancient Egyptians as Ekhet Khufu ("Horizon of Khufu"). According to Herodotus (ii, 124-125) 100,000 men worked on its construction for three months every year. The cubic content of this huge structure, excluding the rock foundation and the chambers in the interior, is 3million cu. yd/2-3million cu. m (originally 3-3million cu. yd/2-5million cu. m). The base measurement is 746ft/227.5m (originally 756ft/230.38m), the vertical height 450ft/137.20m (originally, including the apex, 481ft/ 146.5m), the angle of inclination 51° 51'.