Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

A museum of magic with a Sadist past.

Indents in the pavement are all that remain from a grisly death machine in Paris.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A haunting collection of the vanished and disappearing natural world.

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

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

The oldest stone house in Paris was built by its most famous alchemist.

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

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

Locals believe this abandoned ruin on the outskirts of Bucharest is haunted.

This metro station doubles as an unintentional paleontology museum.

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

This Transylvanian church has changed its denomination four times.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

This museum offers a journey back to the Belle Epoque era of Romania.

Packed to the ceiling with antique taxidermy and hunting arms.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

Romania's triumphal arch looks out over Bucharest.