Ключевые слова: ancient, architecture, building, castle, city, defence, europe, fort, fortification, fortress, historical, history, island, ladoga, lake, landmark, leningrad, medieval, monument, neva, old, orekhovy, oreshek, panorama, panoramic, petrokrepost, region, river, ruin, russia, russian, shlisselburg, stone, tourism, tower, town, travel, traveling, view,