panorama of wachau valley unesco world heritage site with danube river at colorful sunset against duernstein village in lower

aerial aggstein austria austrian blue boat castle church cruise danube donau drone duernstein durnstein europe fall ferdinandwarte foliage forest grapevine heritage krems landscape lower mountain nature panorama panoramic river ship site sky spitz summer tourism town transport transportation unesco valley vienna viewpoint village vine vineyard wachau water weissenkirchen wine world