Sloth rehabilitation center in the jungle of Costa Rica.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

A massive underwater sinkhole made famous by Jacques Cousteau.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

A sinkhole known simply as "The Hole."

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

A 220-foot deep watery drop-off, filled with marine life.

The site of a devastating modern-day mud volcano eruption that buried parts of a village.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

This former sugarcane transport tunnel is now a portal to a lovely beach.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The world's second largest single-dish radio telescope, once used to contact E.T.

The subtle interplay of fire and water is hard to ignore at this remote Jamaican spring.

Cavernous opening completely encased in Karst limestone.

Nature took her revenge on the "Wickedest City in the World."

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Thousands of Haitians travel to the waterfalls to ask the Virgin Mary of Mount Carmel and her voodoo counterpart Erzulie for healing in a yearly pilgrimage.

A violent name for a violent volcano.

Looking like nothing more than a cartoon deserted island, this tiny sandbar is home only to a single umbrella.

A gallery of underwater art that can be visited by man and fish alike.

A collection cataloguing one of the most brutal dictatorships in modern history.

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

Learn the history of Dominican rum production.