Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

The prototype for all Nazi concentration camps.

The most visited, and possibly most controversial, museum in Germany.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A church of bones, decorated with 40,000 human skeletons.

Mysterious Spanish catacombs of unknown origins.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Mountain where Jesus was first tempted by the Devil.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Wonderland replication in progress by one persistent man.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Museum dedicated to the terror regimes of Hungary.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.