Abandoned medieval hill town.

The location of the last witch trials of Italy, known as "The Salem of Europe."

The bomb-ravaged remains of of a colossal Neptune.

This former fascist summer camp was abandoned for decades.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

A wellspring of natural Viagra found in Bosnia.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

The only gulag ever to exist in socialist Yugoslavia.

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

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

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

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

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

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

Yugoslavia's biggest underground airport lies in ruins.

One of the world's oldest olive trees, thought to be over 2,000 years old.

A musical instrument played by the sea.

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

A forgotten monument to Yugoslavian freedom.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

This abandoned Croatian stronghold never saw a great deal of conflict but it is still a beloved relic nonetheless.

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

This brutalist monument is inscribed with 9921 names of Yugoslav partisans who perished during WWII.