This fresco inside a Serbian cave church has been a source of disagreement.

Near Belgrade, an ancient-looking sarcophagus serves as a World War I monument.

An idyllic traditional timber village on a picturesque hill was built for a film.

The oldest church in Serbia was also the ecclesiastical seat of the region during the Middle Ages.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

The ridged layers that make up this river canyon represent Earth's geological history.

This fresco-covered medieval monastery hangs from the side of a steep cliff.

The interior of this Serbian royal family's mausoleum is covered with exquisite mosaics.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

A Serbian church lit by chandeliers made of weapons.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

A mesmerizing reservoir nestled at the heart of a pre-Islamic Yemeni village.

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

The most alien-looking place on Earth.

Oriental bazaar in the heart of Sarajevo.

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

These warring psychedelic crags commemorate an unsuccessful military operation.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

Yugoslavia's biggest underground airport lies in ruins.

A musical instrument played by the sea.

An ancient knight and a symbol of the city's freedom.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.