White cockroaches and other cave species occupy this massive series of lava tubes.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

Naturally formed rock city in Poland.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

A colorful Peruvian city of the dead.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

Giant naked man on a hillside.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

A mecca for India's Jains.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Pagan monument converted to Christianity with the population.

Stalactites and stalagmites in a beautifully lit cave.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Abandoned concert venue legendary for its rock counterculture.

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

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A Buddhist theme park brings you a Buddhist version of Hell.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The tallest hotel in Europe.

Ruins of a once-prized railroad station in New York.