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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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Tagspheia

#pheia

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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Ancient cities1 Harbour complexes1 Submerged sites1

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1 place

✓Verified

GR · Submerged site

Pheia – Submerged Harbour of Olympia at Agios Andreas

Mycenaean to Late Roman (LH III – 5th c. CE harbour) · Mycenaean / Elean / Olympic

Olympia seaport — Homeric Pheia harbour basin and Pontikokastro islet now 4–6 m under Katakolo Bay.