This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

This orchid sanctuary protects countless varieties of the flower, from the huge to the microscopic.

The Acropolis of this little-visited Mayan archaeological site offers great views of Chiapas’s Lake District.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Trek through the jungle on a boat and a swinging bridge and you'll be rewarded with these refreshing, if pungent, mineral pools.

Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

A massive underwater sinkhole made famous by Jacques Cousteau.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

One of the world's largest pyramids stands within El Mirador, the "lost city of the Maya."

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

Beach instrument turned bed and breakfast.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

Take a dip beneath the stalactites in this amazing cenote.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

A hacienda that features all things uniquely Yucatán.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

These azure waters were thought to lead to the Mayan Underworld.

This one-of-a-kind convent boasts a kaleidoscopic exterior of stars and double-headed eagles.