Ключевые слова: 23, april, architecture, autumn, background, beautiful, beauty, blue, bridge, building, canal, channel, city, day, europe, garden, golden, green, guba, historic, historical, landscape, leaf, leaves, lebyazhya, leningrad, natural, nature, october, old, outdoor, park, petersburg, river, russia, russian, saint, season, sky, st, street, summer, sunny, swan, tourism, travel, tree, trees, urban, water,