Ключевые слова: abandoned, ancient, architecture, bastion, blue, brick, building, castle, church, citadel, cloud, defense, fort, fortification, fortress, grass, green, historic, historical, history, island, ladoga, lake, landmark, landscape, medieval, memorial, military, neva, nut, old, outdoors, petersburg, red, region, religion, river, roof, ruin, russia, russian, sky, stone, summer, sunny, tower, travel, wall, war, watchtower,