Stalin's secret bunker.

Monastery, army base, and infamous Soviet Gulag in the far Russian north.

What once claimed to be the world's tallest single-family wooden structure house.

Volcanic irregularity? Odd erosion? Alien eggs? Local legends compete to explain these strange orbs.

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

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

Stunning examples of Russia's 18th-century wooden architecture.

Nightmarish example of the unintended consequences of weapons testing.

A model village fit for an emperor.

Former prison camp dedicated to the victims of political repression.

An unused hyberbolic electricity pylon kept as architectural monument.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

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

Ukrainian defense contractor's center for studying "pyramid energy."

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

Palace where the nearly un-killable Rasputin was murdered.

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

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

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.

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

Museum celebrating the achievements of the Soviet space program.

Gargantuan home of Russian science.

A 360 degree battlefield experience.