Ancient worlds · Old Kingdom Egypt · c. 2600 BCE
The Great Pyramid of Giza
The last surviving wonder of the ancient world, still revealing hidden spaces.
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Built as the tomb of the pharaoh Khufu during Egypt's Fourth Dynasty around 2600 BCE, the Great Pyramid was the tallest human-made structure on Earth for nearly four thousand years. Radiocarbon dating of organic material in its mortar is consistent with that date.
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How to read the labels
EstablishedSupported by strong, converging evidence.
ContestedEvidence exists but qualified scholars disagree.
UnresolvedThe question is open; evidence does not settle it.
LegendComes from myth, literature or tradition, not physical evidence.
SpeculativeA hypothesis with little direct evidence so far.
Hero image: The Great Pyramid of Khufu, Giza. Photo: Douwe C. van der Zee · CC BY-SA 4.0 · via Wikimedia Commons. Evidence labels describe the written claims, not the image. Version 1 · updated 2026-10-22.