This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

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

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

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.

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

The "dragon babies" of southeastern Europe.

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

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

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

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

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

A public work of art that also provides some relief from the summer heat.

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.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

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

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

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

A cemetery for Slovenian notables also serves as a popular recreation space.

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

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

This Metabolist, retro-futuristic residential complex resembles a cyberpunk space colony established on Earth.

Inside the columbarium, thousands of colorful, high-tech Buddhas guard the ashes of the dead.