Göbekli Tepe
9600–8200 BCE
A 12,000-year-old megalithic complex in Turkey that is the oldest known monumental architecture on Earth — built 6,000 years before Stonehenge and 7,000 years before the Egyptian pyramids. It was built by hunter-gatherers who, according to conventional history, should not have had the social organization to construct such a site. It was deliberately buried around 8,000 BCE.