Belgrade Fortress (Serbian: Београдска тврђава, Beogradska tvrđava), consists of the old citadel (Upper and Lower Town) and Kalemegdan Park (Large and Little Kalemegdan) on the confluence of the River Sava and Danube, in an urban area of modern Belgrade, the capital of Serbia. It is located in Belgrade's municipality of Stari Grad. Belgrade Fortress was declared a Monument of Culture of Exceptional Importance in 1979, and is protected by the Republic of Serbia.(Wikipedia)
"Pogled sa Kalemegdana"