Željava Air Base, Croatia
On the border between Croatia and Bosnia and Herzegovina, there was the largest underground military airbase airport in the former Yugoslavia. Construction of the airbase began in 1948 and was finally done in 1968. Throughout those two decades, SFRJ spent about $6 million on the construction. In 1991, the airbase was used intensively during the Yugoslav Wars. During the withdrawal, the army destroyed the runway by filling pre-built spaces with explosives and detonating them. To ensure no one would use the place again, the Military of Serbian Krajina completed the destruction in 1992. The explosion was so powerful that it shook the nearby city and its smoke continued to rise for six months after it.
Željava Air Base Croatia
Duga 3: Ukraine
Operating from July 1976 to December 1989, the Duga 3 was a Soviet over-the-horizon radar system which was used as part of the Soviet ABM early-warning network. Two radars were deployed, later being deactivated in the late 1980s. They lie around the Chernobyl power plant.
Duga 3 Ukraine
