churchs towers in krems town with danube river during autumn in wachau valley, austria

abbey agriculture austria austrian autumn boat castle church churchs danube donau duernstein durnstein europe fall famous foliage frauenbergkirche harbor heritage historic house krems landmark landscape lower medieval melk osterreich panorama picturesque pier port river saint ship site spitz stift tower towers town transportation travel tree unesco valley vienna vineyard wachau weissenkirchen wien world