Ключевые слова: aerial, blue, building, countryside, dam, ecosystem, environment, europe, field, foliage, forest, high, hill, hillside, historic, hydroelectric, idyllic, industry, lagoon, lake, landscape, look out, luxembourg, meadow, mountain, natural, naturally, nobody, outdoor, panorama, panoramic, perspective, picturesque, power, reservoir, river, rural, scenery, scenic, sky, summer, technology, tourism, trail, travel, tree, valley, view, viewpoint, village, water, wilderness, woods,