This symbol of Yugoslav liberation decorated with 620 carved heads of mythical creatures is now a forlorn relic of another time.

This 135-year-old weather station studied the effects of the climate on human health.

A forgotten monument to Yugoslavian freedom.

The only gulag ever to exist in socialist Yugoslavia.

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

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

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

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.

An ethereal glowing blue ocean cave in Croatia.

France's most famous cemetery, with some of its most curious tombs.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This spa park features an open-air museum of abstract marble sculptures.

A Museum with a collection of 40,000 matchboxes.

At this archaeological site, visitors can explore the ruins of the capital of the former Roman province of Moesia.

These natural stone bridges are the largest on the European continent.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

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

An abandoned monument remembering the "Pančevo Holocaust" now stands as a shadow of its former self.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

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