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

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This Parisian café sticks almost exclusively to an ethos of reuse.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

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

This museum houses an imposing skeleton army comprised of creatures great and small.

Abandoned railway line circling the city of Paris.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

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

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

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The plague quarantine island home to the alleged "Vampire of Venice."

Venice's "Island of the Mad."

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Strange secondhand shop showcasing taxidermy and oddies

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

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

Macabre astrological automaton clock dating to the late 1400s.