The hidden lair of an alchemist rediscovered in a 2002 flood.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The first museum in the world devoted to sexual gadgetry.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Countless grotesque faces stare out from this eerie Prague art wall.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

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

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

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A museum in the childhood house of a medical pioneer.

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