Sian Ka'an Biosphere Reserve

A UNESCO World Heritage Site covering 528,000 hectares of the Yucatan coast, Sian Ka'an contains tropical forest, mangroves, marshes, and the second-largest barrier reef in the world, sheltering manatees, jaguars, pumas, crocodiles, and over 300 bird species. The Maya name meaning "Where the Sky is Born" reflects the Biosphere Reserve's position at the meeting of land, freshwater, and sea ecosystems.