A huge musical instrument played by the ocean.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A huge old mansion full of thousands of toys, each there to be used and played with.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Theme park featuring miniature replicas of European monuments.

Cozy basement bar sports an inventory of over 2,000 beers.

The Devil’s own choice when he needs a drink in Brussels.

Climb inside an iron crystal magnified 165 billion times its normal size.

This quirky curiosity shop takes its cues from the world's bazaars.

This spooky statue sits outside a famous Prague theater.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Monument to a suicide protesting the Soviet invasion.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

The hidden lair of an alchemist rediscovered in a 2002 flood.

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.