Lavish royal estate punctuated with heated greenhouses.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

An ancient monastery, a locked room, and a mysterious book heist.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Fascinating town where normal life interfaces with the occult.

A comic book store that puts the marvel back in marvellous.

This South London cemetery holds the remains of more than 15,000 people.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

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

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

Paris' linguistic guide to the international language of, yes, love.

Inside a former cabaret, seven floors of erotic art.

Stroll through retro Paris while shopping for old postcards and discarded doll heads.

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.

France's national museum of scientific and industrial instruments.

A museum of magic with a Sadist past.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

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

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

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

A self-built mosaic house and sculpture park.

The famous winding walk at Chartres is surrounded in mystery and myth.

Two small chapels housed inside an ancient tree.