Ключевые слова: agriculture, country, countryside, cultivation, douro, douro river, douro valley, duero, europe, farm, field, grape, green, harvest, heritage, hill, history, landmark, landscape, mountain, nature, olive, outdoor, outdoors, panoramic, pinhao, plant, port, port wine, porto, portugal, regua, river, rural, scenic, summer, terrace, tourism, travel, tree, trip, valley, view, village, vine, vineyard, vineyards, viticulture, wine, winery,