autumn wachau valley (unesco) during autumn sunset with danube river in lower austria, austri

drone view sky panorama valley danube blue krems church unesco world heritage site duernstein castle landscape austria boat weissenkirchen nature transport donau aerial viewpoint aggstein lower grapevine colorful wachau town wine transportation mountain austrian cruise autumn ship harvest water vineyard tourism panoramic durnstein spitz river village vienna forest vine sunset famous austri