Ключевые слова: agriculture, bridge, country, countryside, douro, douro portugal, douro river, douro valley, europe, farm, ferradosa, field, hill, joao, landscape, natural, nature, olive, outdoors, pesqueira, plant, portugal, river, rural, sao, sao xisto, tourism, train, train tracks, tree, trees, valley, vineyards, wine, xisto,