Ключевые слова: ancient, architecture, brick, building, cathedral, citadel, city, culture, defence, defense, entrance, europe, famous, fort, fortification, fragment, heritage, hill, historic, historical, history, izborsk, kremlin, landmark, landscape, limestone, medieval, military, monument, nature, old, outdoor, protective, pskov, pskov region, ruin, russia, sky, stone, temple, tourism, tower, town, travel, view, wall,