Unusual, mushroom-like rock formations caused by weathering and water erosion, set to disappear, according to geologists.

This iconic Russian space museum sits on a landmark space production facility and houses the Vostok 1, the first manned spacecraft, that was also built here.

Church built on the site where the last tsar of Russia and his family were killed.

This nostalgic Russian museum is full of USSR cultural artifacts from the 1970s and 80s.

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

Stalin's prisoner-built rail line sits in ruin, never having a single car ride its tracks.

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

Replica of mosque destroyed by Russia in the 16th century.

This Russian museum stresses the importance of keeping clean and even holds one of Pavlov's dogs.

No one knows why ancient labyrinths were built on this tiny northern island.

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

This frozen-in-time summer home outside Moscow provides a look at Russian life in the 1950s.

An ever-growing literary collection housed in the apartment where the Russian author penned his final novel.

An early-20th-century "dacha" village of quaint cottages curiously located in a modern part of Moscow.

Specimens collected by the author of "Lolita" and self-taught lepidopterist are exhibited in his childhood home.

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.

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

The tallest hotel in Europe.

The coldest city in the world.

Siberian ghost town built by gulag prisoners.

A dormant lightning machine equal to all the power in Russia.

A Marxist summer camp full of fantastical statues lies tucked away and forgotten in the forests of Moscow.

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

A remote forest of stone pillars along the Lena river.