At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

The stunning interior of this Gothic church is covered in ornate gold details.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Wonderland replication in progress by one persistent man.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

A scale model of Russia so big visitors are offered binoculars to rent so they can see the whole thing.

An abandoned horror film set sits eerily along a highway through Hollywood's "door to the desert."

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

A submerged village appears when dam levels drop.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

Local legend says the remains of Father Christmas lie within the medieval grounds.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

This cemetery features modernist statues as strange as its name.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Bangkok's men with dangerous jobs come here in search of protective talismans.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Romania's only crater lake with water as pure as if distilled.

Naturally formed rock city in Poland.