The world's only above water sand volcano, believed to once be the bathtub of a priest.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

Although it has never been a secret ninja base, this shrine still has plenty of tricks up its sleeve.

Once the site of a 12-century monastery, this tiny island is now home to only five permanent residents.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

A centuries-old iron mine is now a paradise for explorers, divers, and spelunkers.

The second largest in the world, this massive underground void has its own subway.

Veryovkina Cave is more than 1.3 miles deep—the deepest known in the world.

The villagers of the coldest inhabited place on Earth adjust to unique challenges presented by day-to-day living.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A whimsical European-style chateau that calls the coast of Chile home.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

All that's left of the quintessential "cabin in the woods."

Home of an evil witch famous within southern folklore.

Nearly four centuries after its founding, remnants of one of the oldest planned communities in North America are still visible in southern Brooklyn.

Brace yourself for the slowest, scariest, most spectacular drive, down the Drakensberg Escarpment.

This tiny chapel next to a highway provides weary travelers a place to rest, pray, or maybe even get married.

This rare and ancient Christian relic is one of Ireland’s oldest freestanding stone crosses.

Near this allegedly haunted pub, you can find strong spirits on the rocks.

This humble resting place belongs to one of history's most celebrated restaurateurs.

In this medieval church, a centuries-old stuffed crocodile hangs from the ceiling.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.