Great Pyramid of Giza
The Great Pyramid of Giza, built for the Fourth Dynasty pharaoh Khufu, was completed around 2560 BCE and is the largest of Egypt's pyramids. It originally rose to about 146 meters, and it remained the tallest human-made structure in the world for nearly four thousand years. It is the oldest of the Seven Wonders of the Ancient World and the only one still largely standing, which makes it a central monument in the study of early states, engineering, and royal belief.
Pyramid building developed rapidly during Egypt's Old Kingdom. Early rulers were buried in mud-brick mastabas, and around 2650 BCE Djoser's architect Imhotep stacked stone mastabas into the Step Pyramid at Saqqara. Khufu's father, Sneferu, then experimented with smooth-sided designs at Meidum and Dahshur, including the Bent Pyramid, whose angle changes partway up. These trials gave Khufu's builders the knowledge to attempt a monument of unprecedented size and precision on the Giza plateau, near the royal capital at Memphis.
The pyramid is made of an estimated 2.3 million blocks, mostly local limestone, with finer white limestone for the outer casing and granite brought from Aswan for the King's Chamber. The base is nearly square and aligned closely to the cardinal directions, an impressive feat of surveying. Inside are three main chambers and narrow shafts whose purpose is still debated. Much of what we know about the workforce comes from the excavated workers' settlement near the site, which shows evidence of bakeries, breweries, and organized housing. This suggests that the builders were not slaves of legend but a paid or conscripted labor force, probably supported by rotating seasonal workers. Papyri discovered at Wadi al-Jarf, including the diary of an official named Merer, describe the transport of limestone by boat to Giza. Exactly how the blocks were raised remains uncertain, though ramps of some kind are widely accepted.
The pyramid was the centerpiece of a larger complex that included a mortuary temple, causeway, smaller pyramids for queens, and boat pits. Its purpose was to secure Khufu's afterlife and to display the power of a king who commanded the resources of the whole country. Khufu's successors, Khafre and Menkaure, built their own pyramids beside it, forming the Giza necropolis. Later Egyptian rulers moved toward smaller, cheaper tombs.
The Great Pyramid has been stripped of its casing stones, which were reused in medieval Cairo, and its burial chamber was emptied long ago. Even so, it continues to draw scholars and millions of visitors. Recent scans have revealed hidden voids inside the structure, showing that this ancient monument still holds unanswered questions.