Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

A surreal museum of extraordinary industrial objects.

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

An old department store turned Nazi prison turned artist commune.

Floating swimming pool within a moored vessel.

This classic restaurant features a gorgeous mirror-clad room.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The most visited, and possibly most controversial, museum in Germany.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

A font of vintage porn on the silver screen.

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

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

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

France's national museum of scientific and industrial instruments.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

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

Oldest Museum of the Netherlands is a true cabinet of curiosities.

A curious collection dedicated to human and animal anatomy and pathology.