A miniature train-ride through Slovenia's largest cave system.

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

A wonderfully strange collection of 500+ stuffed frogs doing people things.

An ethereal glowing blue ocean cave in Croatia.

A collection of intricate sculptures so small they have to be seen through a microscope.

One of the best collections of wax anatomical models in the world.

Museum devoted to the artificial language of Esperanto.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

This former insane asylum now holds a pathological anatomy museum.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

Microscopic scenes; some call it novelty, some call it art.

This automated sculpture of two men peeing will spell out text messages with their micturition.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Walk through Czech history in Prague's largest graveyard.

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

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

Museum showcases Japanese sexuality and some amazing ocean views.

The first museum in the world devoted to sexual gadgetry.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

A hospital where antique dolls are given new life.