A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

Legend has it fairies gathered at the site of this medieval castle.

This abandoned Croatian stronghold never saw a great deal of conflict but it is still a beloved relic nonetheless.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

Trimmed trees grow alongside the graves like topiary tombstones.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

This huge metal monument is slowly being stripped to its concrete skeleton.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This 14th-century monastery survived Turkish raids, Nazi occupation, and even a stint as a spot to store towels.

This cutting edge museum details the history of skiing, from its ancient origins to its status as a sport.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

This small Slovenian town has become a magnet for microbreweries.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

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

This massive subterranean fissure is known as the "underground Grand Canyon."

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This one-time health resort was used by aristocrats around the world.

The monument honors the mountaineers who were part of Europe’s best anti-Nazi forces.

A crumbling World War I fort that is reached through a series of concrete tunnels.