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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Verified places tagged “old kingdom”

50 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.

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Verified50 Widely accepted5 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

50 places · page 3 of 3

Hydraulic works

🇬🇹Guatemala

Verified

🇪🇬 Egypt · Hydraulic works

Sadd el-Kafara – Wadi Garawi Old Kingdom Dam

Early Old Kingdom (Djoser–Sneferu) · Old Kingdom Egyptians (Memphite)

World's oldest dam (2650 BCE)—110-m Old Kingdom embankment diverting Wadi Garawi floods.

✓VerifiedUNESCO

🇪🇬 Egypt · Pyramid

Pyramid of Meidum

Old Kingdom, late 3rd – early 4th Dynasty · Ancient Egyptian

Collapsing transitional pyramid built by Sneferu (or Huni) at the mouth of the Fayum: first straight-sided true pyramid attempt, originally seven steps encased to form 92 m true pyramid; outer casing…