Grand Cenote, Tulum

Twenty minutes inland from Tulum, on the road to Coba, Gran Cenote—with its verdant jungle locale, crystal clear water (you can see the fish without even getting in the water), and plentiful dive sites—is one of Mexico’s most popular swimming holes. Branching off of the cenote you’ll also find a handful of accessible caverns filled with stalagmites and stalactites.