Žrnov or Žrnovan (Жрнован) was a medieval fortress on the highest top of the Avala Mountain, at 511 metres (1,677 ft), in Belgrade, Serbia. The Ancient Romans had built an outpost there, and later the Serbs expanded it into a fortress. It was completely demolished in 1934 to make the way for the Monument to the Unknown Hero.
Žrnov fortress on Avala near Belgrade, destroyed in 1934
Žrnov in October 1915, after the battle
Monument to the Unknown Hero, built atop the demolished Žrnov
Avala is a mountain in Serbia, overlooking Belgrade. It is situated in the south-eastern corner of the city and provides a great panoramic view of Belgrade, Vojvodina and Šumadija, as the surrounding area on all sides is mostly lowlands. It stands at 511 metres (1,677 ft) above sea level, which means that it enters the locally defined mountain category just by 11 m (36 ft).
Мount Avala in February 2015
Žrnov fortress, destroyed in 1934
Beli Potok, planned seat of the proposed municipality of Avalski Venac
Avala TV Tower