the medieval schonbuhel castle, built on a rock over danube river during spring time in wachau valley, unesco cultural landscape,

abbey austria blossom blue boat built castle church cultural danube durnstein europe famous forest fortress heritage historic house krems landmark landscape lover lower medieval melk monastery mountain outdoor panorama picturesque richard river rock romantic schonbuehel schonbuhel sky spitz spring stone time tourism tower travel tree unesco valley vienna village vineyard wachau water wine