Žrnov

Žrnov or Žrnovan (Жрнов) was a medieval fortress on the highest top of Avala, at 511 metres (1,677 ft), in Belgrade, Serbia. At the top Ancient Romans built the outpost, and later the Bulgarian and the Serbs expanded it into a fortress.

Žrnov

Žrnov or Žrnovan (Жрнов) was a medieval fortress on the highest top of Avala, at 511 metres (1,677 ft), in Belgrade, Serbia. At the top Ancient Romans built the outpost, and later the Bulgarian and the Serbs expanded it into a fortress.