Ключевые слова: autumn, background, beauty, boris, borisova, borisova gradina, building, bulgaria, city, cityscape, climate, cloud, environment, europe, fall, forest, garden, gradina, lake, landmark, landscape, leaf, leisure, meadow, mountain, nature, outdoor, park, relax, scene, scenic, scenics, season, sky, sofia, spring, spring tree, summer, tourism, travel, tree, tsar boris iii, urban, vacation, weather, white, wind, woodland,