An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

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Mountain citadels

1 place to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.

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Verified1 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

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Mountain citadels

✓VerifiedUNESCO

🇵🇪 Peru · Archaeological wonder

Machu Picchu

Late Horizon (Inca Imperial, ~1450–1530 CE) · Inca (Quechua)

15th-century Inca citadel perched at 2,430 m on a narrow saddle between Machu Picchu and Huayna Picchu peaks above the Urubamba Valley.