Several plaster noses are hidden in plain sight around London's Soho neighborhood.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A haunting collection of the vanished and disappearing natural world.

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

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

Abandoned railway line circling the city of Paris.

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

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

"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.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This banal Parisian entranceway is not what it seems.

A charming flea market shop dedicated to retrofuturistic apparati.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

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

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

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

The curious underground history of keeping Paris clean.

A surrealist timepiece by the artist of melting clocks.

France's national museum of scientific and industrial instruments.

The remains of an anti-aircraft battery from World War II look out over Glasgow.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.