This massive monument honors the first human in space.

A 360 degree battlefield experience.

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

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

The tallest hotel in Europe.

Moscow's imposing monument to the Space Age.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Former headquarters of the KGB.

Museum celebrating the achievements of the Soviet space program.

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.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

This colorful and quirky set of pegasus sculptures celebrate the works of poet Zbigniew Herbert.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

Hundreds of notes give thanks to the patron saint of lost causes.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

This extensive collection covers thousands of years of Polish military history.

Modern art commemorates one of the first military actions of World War II.

This Communist-era residential block is one of the longest residential building in Europe.

Inside this Krakow church, an explosion of psychedelic color.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.