This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

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

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

An ethereal glowing blue ocean cave in Croatia.

Some of the smallest works of art in existence.

An abandoned 19th-century iron factory perched along the outskirts of an idyllic village.

A relic of the Cold War tucked away in the forested hills above Bratislava.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

Inside the Šomoška National Nature Reserve exists a unique rock formation rarely seen in the world.

A perfectly preserved hill village where the buildings are painted like white lace.

A unique hotel for the artistic soul.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

Apparently, Hell has waterfalls in Slovenia.

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

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

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

The "dragon babies" of southeastern Europe.

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

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

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A whimsical bridge adorned with decorative dragons.