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

A Roman monument to their own civil engineering prowess.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

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

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

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

An iconic Soviet statue of working-class people.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's imposing monument to the Space Age.

Former headquarters of the KGB.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This effigy of Peter the Great is greatly disproportionate.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

An abandoned 14th-century castle and prison complex on a small island in the Neva River.

Stunning examples of Russia's 18th-century wooden architecture.

Stalin's march toward a more modern USSR flooded a monastery, leaving a unique and extravagant nautical marker, "The Flooded Belfry."

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Something's watching you.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.