Belgrade sits above the confluence of two great rivers, the Sava and Danube. It has been home to many civilizations: Celts, Romans, Byzantines, Bulgars, Magyars, Ottomans and Serbs. Frequently attacked and destroyed, it has been rebuilt many times, on each occasion a new city taking the place of the old. Despite many challenges, Belgrade has resisted assimilation and created a unique cultural identity out of its many contrasting sides, sometimes with surprising consequences.