The reign of King Khufu Egypt for about twenty-three years from 2574 to 2550 BC, during the Fourth Dynasty of the Old Kingdom. It's Great Pyramid at Giza, which is the first of the seven wonders of the world and only complete the wonders of the ancient world that still exists even now.

It was the first building layers of stones on a low mound in the middle of the area that was left unpaved and was incorporated into the structure of the pyramid. The mound serves as the heart of the pyramid and reduced the amount of masonry required. The original entrance of the pyramid is 16.8 meters or 55.1 feet above ground level and opens on the north side to face the polar star, where the living spirit of the king in the afterlife. The length of each side of the ribs constituting the base of about 230.38 meters or 755.65 feet. A building of 210 layer was left of which only 201.

The original height of the pyramid, including its peak is 146.5 meters or 480.5 feet, but he is now about 137.2 meters or 450 feet, and the angle of aspects about 51 and 50 degrees. Was found on the coffin and pyramid blank when you open the pyramid in the ninth century.