The Sian Ka'an Tulum Biosphere Reserve is the largest protected area in the Mexican Caribbean. Sian Ka'an means "where the sky is born" in Mayan and was declared a World Heritage Site by UNESCO in 1987.
Read MorePlanning a visit to Tulum? Since you can’t fly into Tulum directly yet, you’ll have to find transportation from Cancun to Tulum. Here are our five best options.
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