Armijska Ratna Komanda D-0
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The Armijska Ratna Komanda D-0, also known as the Ark, ARK/D-0, Atomska Ratna Komanda, and nicknamed Tito's bunker, is a Cold War-era nuclear bunker and military command centre located near the town of Konjic in Bosnia and Herzegovina. Wikipedia
Opened: 1953
Built: 1953–1979; (Cost: YUD 7,385,745,671.97, equivalent to USD$4,600,000,000.00 at the time)
Coordinates: 43°38′03″N 17°59′42″E / 43.6343°N 17.9949°E