A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

Reminders of the Battle of Berlin still scar the railway.

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

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

Eastern Bloc nostalgia, anybody?

An abandoned saucer-shaped monument in the Bulgarian mountains.

A small museum built by a family that survived the Siege of Sarajevo.

This unusual hostel provides a glimpse of life in a city under siege.

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

A museum dedicated to the former country.

A misnamed well, with a deep dark past.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

A pair of connected skyscrapers form this symbolic gateway.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

The secret room where early Bolsheviks cranked out propaganda fliers on a smuggled printing press.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

A war-torn Olympic relic is being overtaken by graffiti and nature.