This no man's land slicing through the island is strewn with abandoned relics of another time.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

An ancient necropolis of magnificent tombs.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

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

Structure built from the skulls of vanquished foes.

Popular river that runs through the remote Serbian municipality of Leskovac.

Operating continuously since 1903, this "milestone" facility transformed the regional economy.

Abstract monuments express sorrow and resilience at the site of a horrific massacre in Nazi-occupied Serbia.

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

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

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

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

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

A grand Yugoslav memorial to the group of partisans who fought and died resisting western Serbia’s Nazi occupation.

Statues of two of Srem's most well-known animals.

A large concrete replica of a 12th-century figurine.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

A well preserved medieval fortress in Vojvodina.