The Stalin's Bunker is one of the secret places, which was discovered in the early 90s. The deepest known bunker since the Second World War is open to the public. At a depth of 37 meters, there were apartments with an area of 300 square meters, which were able to protect the Supreme Commander of the Soviet troops in the event of a bombing.
The bunker was built in 1942 and could withstand a direct hit from any aviation projectile of that time thanks to a monolithic frame three meters thick and sand that would take a possible blow.