This incredible stone temple is a monument to death, victory, and fantasy architecture.

A quaint Russian village in the middle of a German metropolis.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

A striking 12th-century-style castle built on the edge of a cliff.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The fairy tale castle of the "fairy-tale king."

After being destroyed by two separate fires, this monastery is now home to a small zoo and relics from dozens of saints.

This small chapel holds the mummified heart of one of the heroes of the Greek Revolution.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

The Greek island's old British cemetery feels like a forgotten garden.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

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

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

These 13th century documents come housed in 18th century shelves organized by a 19th century historian.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

A fake Transylvanian castle houses a cathedral of antlers.