Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Budapest's Communist-era statues, banished to the suburbs.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A museum in the childhood house of a medical pioneer.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Once the home of a hermetic monk, this cave now houses a small church.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Mummified monks and the accidentally interred, in a 17th-century crypt.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

Bell tower juts out from a village buried under a lake.

Part ski resort, part modern art space, this lodge brings giant metal spiders and bloody doors to the Austrian Alps.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

An eerie, derelict amusement park in Berlin.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.