A Cold War command center is hidden under an idyllic countryside.

One of the most horrible legacies of the Cold War is a site where the Soviet Union tested nuclear bombs on civilians.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

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

This small museum is basically a time capsule of daily life in the Soviet Union.

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

The Russians still use the transmitter Nazis built during World War II to communicate with submarines.

One of the notorious Soviet leader Joseph Stalin's many summer retreats.

For lovers of Soviet cinema, this museum is home to a vast collection of artifacts and costumes.

An unused hyberbolic electricity pylon kept as architectural monument.

A "station to nowhere" marks the site of a Siberian subway project that never saw the light of day.

Thanks to this small string of islands World War II still hasn't officially ended between Russia and Japan.

You'll find rocket launchers, not rollercoasters, at Russia's “military Disneyland.”

Social outcasts and cannibalism in Stalin's Soviet Union.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.

A replica of the straw hut where Vladimir Lenin lived in hiding, disguised as a hay farmer, in 1917.

Site of the world's largest nuclear explosion.

This massive monument honors the first human in space.

What was once the base for Russia's first nature reserve is now a ghost town, right on the shore of Lake Baikal.