Bunker-42 was built during the Cold War and was a classified bunker equipped with everything necessary in case of a nuclear attack. After the end of the Cold War, it's been transformed into Russia's Cold War Museum.

The visuals are stunning and they speak to a time where the threat of nuclear warfare was reality. You don't build these type of bunkers just for fun, you know.

You can check out the full set of pictures here. I wonder what Stalin would think of people dressing up and posing for photographs in his bunker. [English Russia]