Former headquarters of the KGB.

Moscow's imposing monument to the Space Age.

The tallest hotel in Europe.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

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

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

How Quincy, Florida became the richest town per capita due to one man's shrewd business acumen and taste for fizzy drinks.

The unusual sculptures are believed to be powerful political symbols.

Imperial palace of Emperor Galerius, the Emperor behind the worst Christian persecutions during the Roman Empire.

A museum dedicated to the former country.

This fresco inside a Serbian cave church has been a source of disagreement.

After this medieval Serbian fresco was hidden for centuries, an image of it became one of the first to be sent into space.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

Abstract monuments express sorrow and resilience at the site of a horrific massacre in Nazi-occupied Serbia.

Curious carved stones and bird-like wings are a symbol of Serbian resilience and freedom on the site of a WWII massacre.

A grand Yugoslav memorial to the group of partisans who fought and died resisting western Serbia’s Nazi occupation.

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

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

A pair of connected skyscrapers form this symbolic gateway.

This memorial park stands on the site of one of the largest mass executions of the Second World War.