The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

A 20th-century picture show in 3-D.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

The oldest housing complex in Riga is a mini timeline of architectural trends.

Flamboyant architecture from the turn of 20th century.

One of the world's tallest statues is also one of its most hated.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

A 360 degree battlefield experience.

Gargantuan home of Russian science.

Stalinist skyscraper built with help of cryotechnology.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

The tallest hotel in Europe.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Former headquarters of the KGB.

Moscow's imposing monument to the Space Age.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

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

Nightmarish example of the unintended consequences of weapons testing.

Museum celebrating the achievements of the Soviet space program.