Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

A Barbados crypt where it's said that the coffins refuse to stay put.

Mexico's first public cable car soars over the congested streets outside Mexico City.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

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

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Frida Kahlo's childhood home, now a museum of her life and works.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Extraordinary sculpture garden created by an eccentric English poet.

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

An island filled with hundreds of hanging, decomposing, decapitated dolls.

A macabre sculpture museum in the capital of Haiti fuses human bones with broken metal to create challenging contemporary art.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Soaring over the Niagara Whirlpool since 1916.

A massive underwater sinkhole made famous by Jacques Cousteau.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

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

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

A collection of venomous snakes and reptiles for the whole family to enjoy.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.