A solemn, monumental, kitschy palace of worship honoring victory in the Great Patriotic War.

A 360 degree battlefield experience.

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

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

Local lore says two enemy dragons live within these breathtaking mountain lakes.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

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

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

Yugoslavia's biggest underground airport lies in ruins.

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

A forgotten monument to Yugoslavian freedom.

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

Space-age monument to an early 20th-century uprising.

This elegant monument to those who fought against fascism is inspired by the shape of the poppy flower.

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

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

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

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

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

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

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Bridge that died in war and was resurected.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.