Historic Kalemegdan fort on the hill in the Belgrade 0Archiv

Kalemegdan Fortress detail in Belgrade 0Archiv

Old Kalemegdan Fortress in the Belgrade Serbia 0Archiv

The model of the old fortress at Kalemegdan in Belgrade 0Archiv

Old Church called Holly Petka on Kalemegdan Fortress in Belgrade 0Archiv

The old Orthodox Church of the Holy Petka at Kalemegdan in Belgrade 0Archiv

Golubac Fortress at the Danube River 0Archiv

Golubac Medieval Fortress at the Danube River 0Archiv

Side view of the Golubac Fortress 0Archiv

View on Skopje Fortress from main square 0Archiv