The very center of Paris is surrounded by a bevy of strange good luck rituals.

This massive library holds what was once the largest book collection in the world.

Paris' linguistic guide to the international language of, yes, love.

A museum of carnival attractions where you are invited to ride the rides.

France's most famous cemetery, with some of its most curious tombs.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

The ghostly remains of an accidental sea.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A trash dump made beautiful by nature's power.

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

The world's only museum devoted to the wonders of fluorescence.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

A 16th-century horror show built in a lovely Italian garden.

The sign at the garden gate reads: "These Plants Can Kill."

An eerie, derelict amusement park in Berlin.

The fairy tale castle of the "fairy-tale king."

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Medicinal spa created with the discharge from a geothermal energy plant.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.