Ключевые слова: abandoned, above, aerial, aerial photography, aerial survey, aerial view, ancient, architecture, artillery, august, battery, citadel, day, defensive, destroyed, drone, finnish, first northern fort, fort, fortification, fortress, gulf, historical, kotlin, kronshlot, kronstadt, landmark, landscape, military, naval, northern, old, panoramic, position, ruin, ruins, russia, saintpetersburg, st petersburg, summer, sunny, top view, view, water, water area, water surface,