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

We heard you like volcanoes so we put a volcano in your volcano so you can die for sure...

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

999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

Extraordinary sculpture garden created by an eccentric English poet.

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

An exquisite tunnel of cascading flowers.

Once the most densely populated place in the world, this island is now a ghost town.

This pair of small sea rocks has been "wed" using rope and ancient Shinto tradition.

England's most notorious suicide spot.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

A centuries-old lookout post still sits atop a natural stone spire.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Surreal riveted sea forts once protected the Kent shores from German attack.

A 550-square-meter micro-nation off the coast of Britain.

A Hawaiian stairway to heaven—that you can't climb.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.