HistoryNeolithic (c. 9600–8000 BCE)Southeastern Turkey (Upper Mesopotamia)low confidence

Göbekli Tepe in southeastern Turkey contains T-shaped limestone megaliths, some exceeding 16 feet (5 metres) in height.

Notes on verification

Confirmed by UNESCO, German Archaeological Institute, and History.com, all citing pillar heights up to 5.5 meters (18 feet), consistent with and exceeding the claim's stated threshold. [tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]

Sources