🇨🇳 China · Pyramid
Goguryeo Pyramidal Tombs – Jian (Ji'an)
Goguryeo Kingdom 37 BCE–668 CE (pyramids 3–7 c CE peak) · Goguryeo (Korean–Chinese proto-state)
Eastern Asia's largest tumulus pyramid cluster: 7,000+ stone step-pyramids and earthen mounds 3 Kingdoms Goguryeo (37 BCE–668 CE) across Ji'an (Tonggou, Guonei) and DPRK Pyongyang cluster.