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

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

A mechanized clock where a man fights off a dragon, crab, and rooster.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

Weird wax anatomical models reside here, as do other anatomical specimens.

The oldest stone house in Paris was built by its most famous alchemist.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

This conical hill was built as a testing ground for an engineer known as the Glider King.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Puppet theater and museum holding a collection of more than 300.

A restaurant and observation deck built in a unique broadcasting antenna.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Art and a pun, all in one.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

An old department store turned Nazi prison turned artist commune.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.