Pyramids (Egypt), large structures with four triangular sides that meet in a point at the top, directly over the center of the pyramid’s square base. Ancient peoples in several parts of the world built pyramids, but the Egyptians constructed the biggest and most famous pyramids, with which this article deals. For information on the pyramids of Mesopotamia, see Ziggurat. For information on the pyramids of the Americas, see Pyramids (The Americas).

The ancient Egyptians built more than 90 royal pyramids, from about 2630 BC until about 1530 BC. During that time, the pyramid form evolved from a series of stepped terraces that resembled the layers of a wedding cake to the better-known, sloped pyramidal shape. The first pyramid, the Step Pyramid at Şaqqārah, was constructed during the reign of King Djoser (2630 BC-2611 BC). The largest pyramid is the one built for King Khufu, at the site of modern Giza. Khufu’s pyramid, known as the Great Pyramid, is the only one of the Seven Wonders of the World that still survives.


WHAT IS A PYRAMID?
Egyptian pyramids served as tombs for kings and queens, but they were also places of ongoing religious activity. After a ruler died, his or her body was carefully treated and wrapped to preserve it as a mummy. According to ancient Egyptian belief, the pyramid, where the mummy was placed, provided a place for the monarch to pass into the afterlife. In temples nearby, priests performed rituals to nourish the dead monarch’s spirit, which was believed to stay with the body after death. In the Old Kingdom (a period of Egyptian history from about 2575 BC to about 2134 BC), Egyptian artists carved hieroglyphs on the walls of the burial chamber, designed to safeguard the dead monarch’s passage into the afterlife. These hieroglyphic writings, which include hymns, magical spells, instructions on how to act in front of the gods, and other pieces of useful knowledge, are known as the Pyramid Texts.

During the Old Kingdom, the Egyptians built their largest and most ambitious pyramids, typically of large stone blocks. Over time, the size and quality of the pyramids decreased, probably because they were extremely costly. In the Middle Kingdom (2040 BC-1640 BC), the Egyptians built pyramids mostly of mud brick. All pyramids were aligned to the cardinal directions, meaning that their sides ran almost exactly due north-south and east-west. Most pyramids rose from desert plateaus on the west bank of the Nile River, behind which the sun set. The Egyptians believed that a dead monarch’s spirit left the body and traveled through the sky with the sun each day. When the sun set in the west, the royal spirits settled into their pyramid tombs to renew themselves.