Ключевые слова: aerial, alpine, alps, attraction, background, beautiful, blue, city, cloud, clouds, country, countryside, cover, destination, environment, europe, forest, grass, green, hill, hills, lake, landscape, lucerne, mountain, mountains, nature, panorama, panoramic, postcard, rigi, rock, scenery, scenic, sky, summer, switzerland, tourism, tree, trees, valley, view, wallpaper,