A military bunker located near Konjic, Bosnia and Herzegovina. Constructed between 1953 and 1979, this extensive underground facility was designed to protect Yugoslavia's leadership in the event of a nuclear war. The bunker, officially known as ARK D-0, was built deep within a mountain and remained a closely guarded secret throughout the Cold War era.
It was never used for its intended purpose and now serves as a museum and art gallery, offering visitors a unique glimpse into Yugoslavia's military preparedness during the Cold War period.