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

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

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

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

The only castle in North America to ever house European sovereigns.

A wild Hollywood resort thwarted by mosquitoes.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

Extraordinary sculpture garden created by an eccentric English poet.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

Hotel designed around a 16th century Mexican bullring.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A snapshot of the city's fascinating voodoo culture.

The second oldest continuously operating bar in Louisiana.

The museum chronicling a treasure hunter's dream, fulfilled.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

100 year tradition of fist fights, marked by marble footsteps.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

A gargantuan crystal kingdom.

This church, buried halfway in lava rock, is all that remains of a Mexican village destroyed by a volcano.

Orcas on display and in the water.

Dr. Farid Mattar's Monument of Peace.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.