Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A Serbian church lit by chandeliers made of weapons.

A pair of connected skyscrapers form this symbolic gateway.

A misnamed well, with a deep dark past.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A curious cave church carved into the face of a cliff.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

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

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

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

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

An abandoned brutalist monument whose history has been lost to the ages.

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

Where the lovelorn find a home for their sentimental keepsakes.

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

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

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

Yugoslavia's biggest underground airport lies in ruins.

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

The only gulag ever to exist in socialist Yugoslavia.