During WWII Stalin wanted to keep the supply lines for the Kiev fortress alive at all cost, using two tunnels under the river Dnjepr. Today the ruins of this failed, highly secret project are sinking into the swamps near the city.
Many may be familiar with the French Maginot Line. The Soviet counterpart, the Stalin Line, is far less well known. 35 kilometers from Minsk, some of the few remains have been turned into a “Military Amusement Park”.