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

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

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.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A massive underwater sinkhole made famous by Jacques Cousteau.

One Costa Rican island is so beset by illegal shark poachers that the local rangers have built an entire bridge with their confiscated gear .

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

This Costa Rican topiary park is a surreal garden of unearthly delights.