panorama of wachau valley (unesco) with ship on danube river against sankt michael church in lower austria,

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