Ключевые слова: agriculture, blue, country, countryside, douro, eco, ecotourism, europe, farm, field, fruit, garden, grape, grass, green, harvest, hill, home, house, landscape, mountain, nature, olive, plant, plantation, port, portugal, river, rural, scenic, sky, sunrise, sunset, tourism, travel, tree, valley, village, vine, vineyard, water, wine, winery,