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

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.

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

A whimsical bridge adorned with decorative dragons.

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

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.

Maze-like streets filled with vibrant murals draw visitors to this Istrian town.

Longest fortress system anywhere in Europe.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

This picturesque medieval monastery guards a small trove of historic treasures.

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

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 100-foot metal tower and swinging bridge that provides stunning views of mountains in five states.

Where the lovelorn find a home for their sentimental keepsakes.

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

A musical instrument played by the sea.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

The rogue roots are gradually consuming some of the historic marble grave markers.