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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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The catalogue

Excavated world heritage places tagged “earthwork”

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

Filters

Verification

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Verified52 Widely accepted2 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

Category

Earthworks52 Megaliths22 Mounds17 Archaeological wonders12 Ancient cities10

Country

🇺🇸United States39 🇳🇬Nigeria6 🇧🇷Brazil3 🇬🇧United Kingdom2 🇯🇵Japan2

Heritage

UNESCO World Heritage only

Excavation

Partially excavated39 Excavated11 Unexcavated2 Buried2

Tags

earthwork54 hopewell14 ohio13 adena7 unesco6 mississippian5 americas4 louisiana

2 places

Geoglyphs

7

Ancient villages5

Ceremonial centers3

Platform mounds2

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🇬🇭Ghana

1

🇪🇨Ecuador1

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4

UNESCO World Heritage

✓VerifiedUNESCO

🇬🇧 United Kingdom · Earthwork

Silbury Hill

Late Neolithic 2400–2300 BCE · Late Neolithic Britons (Grooved Ware)

Europe's tallest prehistoric mound – 39-m artificial hill with unknown purpose.

✓VerifiedUNESCO

🇺🇸 United States · Earthwork

Fort Ancient Earthworks

Hopewell 1–450 CE · Hopewell tradition

Largest hilltop enclosure: 40 ha with 67 gateways, Hopewell 1–450 CE, UNESCO 2023.