Ключевые слова: agriculture, background, beautiful, countryside, culture, destination, douro, douro portugal, douro river, douro valley, europe, famous, farm, field, green, heritage, hill, landmark, landscape, mountain, natural, nature, outdoor, outdoors, panoramic, port, port wine, porto, portugal, portuguese, production, river, rural, scenery, scenic, tourism, transportation, travel, trip, unesco, valley, view, village, vine, vineyard, vineyards, viticulture, water, wine, wine region,