Calakmul

Calakmul, meaning "City of the Two Adjacent Pyramids" in Maya, is a major archaeological site deep in the tropical forests of Campeche, Mexico. Occupied from approximately 600 BC to 900 AD, it reached its zenith in the 6th century with an estimated population of 50,000 and influence extending over 1.5 million people. Calakmul waged a prolonged rivalry with Tikal, defeating it in 562 AD before suffering its own defeat in 695 AD, which precipitated its decline. The site contains over 6,000 structures and 117 stelae, the largest collection in the Maya lowlands. It was inscribed as a UNESCO World Heritage Site in 2002.