The three pyramids at Giza are the surviving apparatus of a state theology in which the pharaoh, at death, was not simply buried but transformed.
The Fourth Dynasty project
The complex was raised across roughly three generations of the Fourth Dynasty, about 2600 to 2500 BCE, for Khufu, his son Khafre and his grandson Menkaure. Khufu's Great Pyramid, originally about 146 metres, held the record for the tallest human-made structure for some four thousand years. Each pyramid was only the centre of a larger machine: a valley temple by the river, a causeway climbing to a mortuary temple against the pyramid's east face, and satellite pyramids and boat pits, one of which held a disassembled cedar barque now reconstructed.
What the king became
The theology is legible in the older Pyramid Texts of the following dynasties, which describe the dead king ascending to join the circumpolar "imperishable stars" that never set, and merging with the sun god Ra whose daily circuit the pyramid's solar geometry echoes. The Great Sphinx, a lion with a royal head carved from the bedrock beside Khafre's causeway, was later worshipped as a form of the sun god Horemakhet. The precision of the work, the near-cardinal orientation and the internal shafts, has fed four thousand years of speculation, most of it running well ahead of the evidence for what were, in the first place, tombs.
After the pharaohs
The plateau drew visitors continuously: New Kingdom pilgrims who left the Sphinx a temple, Greek and Roman tourists who counted the pyramids among the seven wonders, and medieval and modern scholars. Only Giza's pyramid survives of the seven wonders. The site is a working archaeological zone and one of the most visited monuments on earth, administered by Egypt's antiquities authority.