A futuristic, brutalist masterpiece that is also strangely prison-like.

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

The ruined doorway is a portal to the building's turbulent and torturous past.

An ancient octagonal weather station named for the eight Greek gods of wind.

A sharp sculpture made of thousands of pieces of jagged glass.

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

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Where commuters walk through remnants of an ancient Greek necropolis.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

Museum dedicated to the terror regimes of Hungary.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

A cemetery for Slovenian notables also serves as a popular recreation space.

This abandoned Slovenian military barracks has become a punky-political art squat.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.