Budapest's Communist-era statues, banished to the suburbs.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Museum dedicated to the terror regimes of Hungary.

A museum in the childhood house of a medical pioneer.

Structure built from the skulls of vanquished foes.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

Curious carved stones and bird-like wings are a symbol of Serbian resilience and freedom on the site of a WWII massacre.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

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

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

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

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

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

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

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

An ethereal glowing blue ocean cave in Croatia.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

At this cemetery, artists are invited to design their own gravestones.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

An old wool-washing house filled with Fluxus contemporary art.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.