Five mile wide circular ring of rock in the Russian Far East is a curious geological oddity.

The Nazis lost more men trying to take this Russian-held Stalingrad apartment block than they did when taking Paris.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.

Russia's giant concrete QWERTY keyboard is likely the largest in the world.

The giant Siberian crater known locally as the "doorway to the underworld" is expanding every year.

Europe's highest peak is a key pillar of the Seven Summits mountaineering challenge.

This massive glowering Lenin head gazes out over eastern Siberia.

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

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

A homemade anatomical collection of medical anomalies and accidental catastrophes.

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

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

Former prison camp dedicated to the victims of political repression.

Gigantic natural towers in a Russian plateau.

This cuddly rodent has a place of honor at a Russian institute for genetic research.

Stalin's secret bunker.

This remote lake in Siberia supposedly contains a fearsome sea monster.

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.

Stalin's march toward a more modern USSR flooded a monastery, leaving a unique and extravagant nautical marker, "The Flooded Belfry."

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

A city block packed with whimsical sculptures that seem to be plucked from a tiled fantasy world.

Dark, eerie exhibits make for a surreal exploration of the subconscious.

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