Dramatically shaped by heroic events through the centuries, Serbia has a fascinating heritage just waiting to be discovered. From medieval fortresses: Petrovaradin, Kalemegdan, Golubac, Smederevo to numerous Roman cities: Singidunum (ancient Belgrade), Viminacium, Felix Romuliana (emperor’s palace), Mediana which was the birth place of Constantin the Great (16 of 52 Roman emperors were born in Serbia). The famous UNESCO monasteries: Mileševa (the famous frescoe White Angel), Ziča, Studenica, from the Romanic period are uniquely attractive.