The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

This massive library holds what was once the largest book collection in the world.

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

A true Valhalla for cactus and succulent lovers.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

The world's only museum devoted to the wonders of fluorescence.

“And the Lord said unto Johan, build for thee an ark for the end of the world is approaching.”

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

A unique collection of gilded age mechanical pianos.

The attic of a four-century-old canal house hides a clandestine church.

Cat art as far as the eye can see.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Ghosts of France's colonial past.

An antique curios dealer and hybrid taxidermist.

A museum of magic with a Sadist past.

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

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.