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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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© 2026 Mysteria. Exploring the ancient world.Map © OpenFreeMap · OpenMapTiles · OpenStreetMap contributors

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1 place carries this tag, across every kind and continent it appears in.

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Verified1 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

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Archaeological wonders1 Earthworks1 Hydraulic works1

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🇾🇪 Yemen · Hydraulic works

Subeihi Dam

Sabaean Kingdom 800 BCE - 570 CE · Sabaean (Saba) kingdom

800 BCE Sabaean gorge regulator dam (90 m) 2.8 km upstream of Marib, desilting weir for oasis triad.