This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

The social hall of this former factory is a Communist-era time capsule.

A decaying, yet still functioning, work of communist architecture.

An homage to the medieval rulers of Bulgaria.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This snug medieval lane is one of the narrowest streets in the world.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

Moss and stone turn this waterfall into an otherworldly liquid veil.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

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

A window into the luxurious lives led by the landed gentry of Minsk before the 1917 Revolution.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

This monumental work of art symbolizes the coming together of a previously divided city.

Beautifully carved tombstones fill this unmarked graveyard, uniquely situated near the village's famous stone wine cellars.

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

Legend says this sacred tree was a gift from goddess Athena.

A massive collection of petroglyphs dating back some 40,000 years.

A fountain standing as a testament to a doomed alliance.

The most metal church of all time was built in record time because of an international, pious pissing contest.

Ancient serpentine sacrifice holder that has stood the test of time.

This artistic fountain display pays homage to this area's theatrical history.