Pyramid is the only masterpiece among the seven architectural wonders of the ancient world. The pyramids are the tombs of Pharaoh, the ruler of ancient Egypt. The ancient Egyptians worshipped the power of nature. The shape of the pyramid comes from the shape of a mountain, which symbolizes firmness and eternity. In addition to the ancient Egyptians, the ancient Mayans and Aztecs also built many pyramid-shaped buildings in Central America, France and Italy, and sometimes pyramid-shaped buildings appeared in modern buildings.

This is because the pyramid form is extremely beneficial to the wind resistance of high-rise buildings, even better than cylindrical buildings. The Pan-American Building in San Francisco, USA, adopts a pyramid shape as slender as bamboo shoots; Hancock Tower in Chicago is a pyramid-shaped building without spire, with low center of gravity and good stability, which is beneficial to earthquake resistance. However, the external wall of pyramid-shaped building is inclined, which makes the construction difficult. One change is to combine square columns and gradually reduce the number of square columns from bottom to top. Chicago's famous Sears Tower 1 10 is an example of using square columns.

Modern stepped architecture actually belongs to pyramid architecture, and its external feature is that it shrinks upward one by one, just like steps, similar to the form of early pyramids. Its advantage is that the building is very stable, and each floor has a very spacious balcony, which can get enough sunshine and a larger outdoor environment. Therefore, stepped buildings, as houses, are particularly popular with people.