A war-torn Olympic relic is being overtaken by graffiti and nature.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

These warring psychedelic crags commemorate an unsuccessful military operation.

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

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

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

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

Gargoyle head that brings good luck.

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

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

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

A musical instrument played by the sea.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

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

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

The place where World War I began.

Oriental bazaar in the heart of Sarajevo.

Bridge that died in war and was resurected.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

Climb inside an iron crystal magnified 165 billion times its normal size.