Ornate limestone building now filled with geologic specimens, and more.

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

BDSM, 1930s Style.

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

The largest medical and anatomical collection in France lies hidden from the public.

A Parisian boutique devoted to la Sape, the elegant Congolese fashion subculture rooted in European colonization.

Collection of antique taxidermy and natural specimens, near one of Paris's oldest flea markets.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

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

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

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

A unrivaled and rather horrifying collection of wax dermatological models.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

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

A haunting collection of the vanished and disappearing natural world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

An early 19th-century English style garden hidden in the Rotterdam cityscape.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

After years of being casually peed on by humans, this tree is peeing back.

From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

This Luxembourg cave is covered in cryptic looking marks left by mining activity.