Former headquarters of the KGB.

Home of the future Emperors of Russia.

The "Mystery and Company of Merchant Adventurers" is an Elizabethan-era hangout in Moscow.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

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

Russian researchers who have been excavating ancient squirrel burrows may have brought a 32,000-year-old plant back to life.

Museum design and public transportation meet in this unique Russian train car.

A museum dedicated to controversial Russian pianist Alexander Scriabin.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

The tallest hotel in Europe.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

A 360 degree battlefield experience.

Gargantuan home of Russian science.

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

This massive monument honors the first human in space.

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

Some Moscow residents once claimed the bizarre, contorted mass of metal on top of the building was used to manipulate minds.

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

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

This Russian locomotive museum was once devoted just to Lenin's funeral before expanding to encompass Moscow's entire train history.

One of the largest collections of socialist realist art shows the surprising depth of the official art of the Soviet Union.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

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

A tea merchant built a dazzling Chinoiserie mansion in the 1890s to impress a Chinese ambassador