The Great Pyramid is the tomb of Khufu, the second king of the fourth dynasty, which was built around 2690 BC. The original height is146.5m, and the top is peeled off due to years of weathering10m, but the current height is136.5m; Each side of the base is more than 230 meters long, the angle of the triangle is 52 degrees, and the bottom area of the tower is 52,900 square meters. The tower is made of 2.3 million stones, each weighing an average of 2.5 tons, and some weighing dozens of tons; Some scholars estimate that if the stones of the pyramids are transported by train, about 600 thousand wagons are needed; If these stones are cut into a foot-wide road, you can go around the earth.

The second pyramid is the tomb of King Havra, son of Khufu. Built in 2650 BC, it is 3 meters lower than the former and now it is 133.5 meters higher. But the architectural form is more perfect and spectacular. There are temples and other ancillary buildings and the famous Sphinx in front of the tower. The Sphinx refers to Ha Fula. The Sphinx looks like a lion, 22 meters high and 57 meters long. One ear of the statue is 2 meters high. Except for the lion's claws, the whole statue is carved from natural rocks. Because the stone is loose, it has gone through more than 4 thousand years, and the whole statue has been severely weathered. In addition, the face was severely damaged. Some people say that Ma Mruck used it as a target to practice shooting, while others said that it was a trace left by the shelling when Napoleon invaded Egypt in the18th century.

The third pyramid is the tomb of King Koala, the grandson of Khufu, which was built around 2600 BC. At that time, it was the decline of the fourth dynasty, and the height of the Menkoala pyramid suddenly dropped to 66 meters.

Three pyramid stones can build a fence 3 meters high and 30 centimeters thick around the French border. The inclination of the pyramid is 52 degrees, and each stone is closely connected. I can't find the gap, even the tip of the knife can't be inserted. You have to admire the low level of measurement and engineering technology in ancient Egypt.