Places stonoceno Wants to Go

This abandoned Belgian fortress is purposefully being left to nature.

Longest fortress system anywhere in Europe.

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

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

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Humble beginnings for one of the world's most famous scientists.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Gargoyle head that brings good luck.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

UNESCO-protected ancient burial ground.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

This historic cemetery was inaccessible for several years due to dozens of land mines.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.