panorama of krems town with ships on danube river in wachau valley(unesco world heritage site), lower austria, austria

architecture austria landscape austrian autumn blue building church city danube donau europe fall historic krems landmark lower old panorama river stein tower town travel unesco valley vineyard wachau water ship boat motor gottweig transport transportation cruise bridge vineyards vine wine summer monastery abbey duernstein panoramic drone ferdinandwarte viewpoint ships valleyunesco world heritage site famous