CREDITS
Photo credits and licences
Every photograph on this site comes from Wikimedia Commons and is used under the licence shown. The copies here are resized. Follow the source link for the original file and its full licence terms.
The Stone of the Pregnant Woman at Baalbek, Lebanon: a Roman-era monolith of roughly 1,000 tonnes, still lying in its quarry.
Photo: Choinowski · CC BY-SA 4.0 · source
The Giza pyramids. Muon imaging found a large void (2017) and a hidden corridor (2023) inside the Great Pyramid. Claims of vast chambers beneath Khafre rest on a radar method whose peer-reviewed paper was retracted.
Photo: Ricardo Liberato · CC BY-SA 2.0 · source
Göbekli Tepe, Turkey: carved stone enclosures built more than 11,000 years ago, long before farming villages were thought able to organise work on this scale.
Photo: Teomancimit · CC BY-SA 3.0 · source
Sacsayhuamán, Cusco, Peru: Inca walls of irregular blocks fitted together without mortar.
Photo: Diego Delso · CC BY-SA 4.0 · source
Puma Punku, Bolivia: andesite blocks cut to repeating H-shaped profiles.
Photo: Janikorpi · CC BY-SA 3.0 · source
The Large Hadron Collider tunnel at CERN, where physicists search for departures from the known laws of physics.
Photo: Maximilien Brice (CERN) · CC BY-SA 3.0 · source
Meteor Crater, Arizona: an impact crater about 1.2 kilometres across, formed some 50,000 years ago.
Photo: USGS National Map · Public domain · source
Romanesco broccoli: each bud repeats the shape of the whole, a natural picture of recursion.
Photo: Jon Sullivan · Public domain · source
Webb's First Deep Field: thousands of galaxies in a patch of sky about the size of a grain of sand held at arm's length.
Photo: NASA, ESA, CSA and STScI · Public domain · source
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