HistoryNeolithic (c. 9600–8200 BCE)Southeastern Turkey (Upper Mesopotamia)low confidence

Göbekli Tepe's largest enclosure, Building D, measures at least 65 feet across and contains two freestanding limestone pillars each 18 feet tall.

Notes on verification

Confirmed by multiple independent sources including Archaeology Magazine, the German Archaeological Institute's Tepe Telegrams blog, and specialist Göbekli Tepe sites. Core figures (65 feet diameter, 18-foot pillars) are consistent across sources. [tier=unverified indep_score=0.3 clusters=4 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]

Sources