A curious cave church carved into the face of a cliff.

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

Sealing couples' love since just after World War I.

This statue became the mascot of Vrnjačka Banja after Games Without Borders made a stop in this town.

Monasteries on rock pillars, once accessible only by frayed ropes.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

An underground city of salt.

This man-made mound monument was built out of soil from all across the Polish empire.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This grubby wall is said to be one of the Earth's esoteric energy centers.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

The topiary maze at the Habsburg hunting lodge.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Op-art architecture designed for happiness.

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

The first European statue dedicated to the legendary musician.

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

This art installation pays homage to the famed stones of European lore.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

The unusual sculptures are believed to be powerful political symbols.

This statue of the famed author, actor, and journalist is made entirely of screw-nuts.