One part local history, 99 parts gruesome haunted house.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A wunderkammer of mysterious objects and stories.

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

An antique curios dealer and hybrid taxidermist.

Inside a former cabaret, seven floors of erotic art.

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

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

An unusual number plate signifies the building's saucy past.

An odd museum dedicated to French fakes.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

BDSM, 1930s Style.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

The curious underground history of keeping Paris clean.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

A unrivaled and rather horrifying collection of wax dermatological models.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.