Deep underground, the rusting remains of a German water pumping station from World War II.

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

In between two buildings in Ljubljana, medieval tunnel to nowhere.

This former railway facility is the oldest in Slovenia, and now houses a museum showcasing the history of steam locomotives.

This was the second largest mercury mine in the world and one of the oldest preserved mine complexes in Europe.

Apparently, Hell has waterfalls in Slovenia.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

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

Strange rumors surround the artist who created these solemn metal guard dogs.

This small Slovenian town has become a magnet for microbreweries.

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

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

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

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

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

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

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

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

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

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.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.