Ключевые слова: acropolis, ancient, ancient buildings, ancient city wall, antique, architecture, attic, bay, border defense, castle, city gate, city tower, city wall, cultural landscape, defense, famous scenic spots, fortress, garrison, great wall, historical sites, iconic buildings, majestic, military, military fortress, ninghai city, old dragon head, parks, shanhaiguan, shanhaiguan ming great wall, source of the great wall, wall stack, world cultural heritage,