Built as an anti-fascist tribute, this surreal Yugoslav memorial became an unwelcome symbol after the Croatian war for independence.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This beautiful Croatian fortress is haunted by legends of forbidden love.

A forgotten monument to Yugoslavian freedom.

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

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

This military tunnel dates back to World War II and provides visitors with a little wartime adrenaline.

The only gulag ever to exist in socialist Yugoslavia.

A tower marking the spot where Yugoslavia began its resistance against the invading Nazis stands neglected, but not quite forgotten.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

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

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

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

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

Longest fortress system anywhere in Europe.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

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

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

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

This huge metal monument is slowly being stripped to its concrete skeleton.

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

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

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

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