The Underground Paradise of Rio Secreto - Playa del Carmen, Mexico. Rio Secreto is a huge system of caves near to Playa del Carmen, Mexico. Over many many centuries an underground river of pure water has been carving out pure beauty beneath.
Tulum, Mexico Fly into Cancun, Mexico, then take a 1 hour drive south to Tulum. This beach side spot has blue-green water and Mayan ruins on the water’s edge. You can also go spend a day exploring Gran Cenote.