Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

Eastern Bloc nostalgia, anybody?

A vast Communist-era exhibition space in the Bulgarian capital.

"Unity, Creativity, Beauty."

A flamboyant five-story building in Bulgaria resembles a crawling snail.

A striking symbol of the Bulgarian capital.

A collection of art from Bulgaria's time as a communist state.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

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

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.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This spectacular bridge is part of an abandoned train line that once connected Mallorcan capital to the southeastern coast.