The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

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

Natural saunas fed by volcanic heat.

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

Beach instrument turned bed and breakfast.

A massive maritime collision may have led to the myth of a resort island's strange financial status.

An old slave lookout in Cuba's historic sugar cane fields.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

Neo-cave art on the macro scale.

One man's love of sea life and art has turned his home into a temple of outsider island art.

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

The rusted remains of a victim of Hurricane Ike.

Collection of fossils, plants, and ancient animals encased in amber.

Largest pre-Lent festival in the Dominican Republic.

Renowned restaurant tucked in a cave once occupied by buccaneers.

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

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

This small primate research island is teeming with playing, fighting wild monkeys.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

Once a year, ambitious surfers can ride the world's largest river.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.