Tulum is a resort town on Mexico’s Caribbean coast, around 130 km south of Cancún. The 13th-century, walled Mayan archaeological site at Tulum National Park overlooks the sea. It incorporates the clifftop Castillo, built as a watchtower, and the Templo de las Pinturas, with a partially restored mural. Inland, the Cobá archaeological site has pyramid-shaped temples with views over the surrounding jungle.