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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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The house

Thaumatica
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Portugal

100 places in the atlas, 11 of them inscribed as UNESCO World Heritage.

Kinds found here

Megaliths56
Antas14
Dolmens10
Fortresses10
Archaeological wonders8
Ancient cities6
Contested sites6
Cromleches6
Stone circles6
Hypothetical places5
Castros4
Necropoleis4

How well established

Verified63
Accepted29
Contested2
Hypothetical3
Pseudo3

Top regions

Alentejo10
Alentejo, Evora10
Lisbon District7
Alentejo, Évora4
Alentejo, Évora District3
Lisbon District, Torres Vedras2

Filters

Verification

Pick several

Verified63 Widely accepted29

Monsanto e Idanha-a-Velha

2

Tomar (São João Baptista) e Santa Maria dos Olivais2

Alentejo, Monsaraz, Telheiro1

Alentejo, Mora, Pavia, central Alentejo plaza, Pavial village1

Alentejo, Moura, Xarez village, Alqueva Reservoir fringe, near confluence Guadiana1

Contested

2

Pseudoarchaeology3

Category

Megaliths56 Antas14 Dolmens10 Fortresses10 Archaeological wonders8 Ancient cities6 Contested sites6 Cromleches6 Stone circles6 Hypothetical places5 Castros4 Necropoleis4 Rock art sites4 Fortified settlements3

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Heritage

UNESCO World Heritage only

Excavation

Not applicable37 Excavated36 Partially excavated17 Excavation ongoing7 Unexcavated3

Tags

megalithic52 portugal32 alentejo25 wikidata researched18 wikipedia sourced11 fortress10 iberian neolithic10 chalcolithic6 archaeological wonder5 anta4 castro4 cromlech4 phantom4 alcalar3 algarve3 late neolithic atlantic3 neolithic3 pizzigano3

1 place

Rock art sites Not applicable Clear all

✓VerifiedUNESCO

🇵🇹 Portugal · Rock art

Prehistoric Rock Art Sites in the Côa Valley and Siega Verde

paleolithic archaeological site in Portugal