The pyramid of Kheops is the first of the seven wonders of the world and the only one of its wonders still standing today. It is an imposing monument built by the Egyptians at the time of antiquity. On a square base, it was about 150m high for a 230m side. Nowadays it is a little smaller due to its erosion. It is from almost safe source the tomb of the Pharaoh Kheops who lived under the Fourth Dynasty, almost 4,500 years ago.