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

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

Sofia's legislative center is continuously reinventing itself.

This building has two facades of clashing architectural designs.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

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

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

An homage to the medieval rulers of Bulgaria.

This once-derelict building is now one of the most beautiful bookstores in the world.

This sculpture used famed boxer Joe Louis as the inspiration behind its body.

Romania's triumphal arch looks out over Bucharest.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This train station's platforms were built extremely narrow to deceive a rather arrogant government official

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

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

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

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

This is the birthplace of Vlad the Impaler Vlad III Dracul.

Something's watching you.

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

A collection of items from a way of life that no longer exists.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.