boats moored along the danube river in belgrade with trees and nature in the background, of the river dabube on zemunski kej, in

srbija zemun beograd travel traditional small boat river landscape quay riverbank serbia water belgrade europe european old danube blue anchored wharf shore tranquil transport bank port ship quiet navigation nautical harbor calm dunav reka kej zemunski boats summer nature forest scenic sailing leisure cityscape dock urban trees waterfront