A forgotten monument to Yugoslavian freedom.

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

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Now abandoned, the world's first torpedo factory is crumbling into the sea.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

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

The remains of a sunken military ship wreck visible through clear water.

Yugoslavia's biggest underground airport lies in ruins.

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

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

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

A cableway for car transport.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

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

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

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.

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

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

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

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