🇲🇽 Mexico · Ancient city
Cobá
Preclassic to Postclassic 300 BCE–1450 CE (peak Classic 600–800, Terminal 800–1100) · Maya (eastern Lowlands, Sian Ka'an sphere)
Vast lowland Maya city of ~80 km² with ~6,500 structures linked by 16 white-road sacbeob (raised plaster causeways totalling 70 km, longest Sacbe 1 100 km to Yaxuná near Chichén Itzá, 10 m wide),…