Ключевые слова: ancient, architecture, asia, asian, blue sky, castle, construction, culture, entrance, fortress, gate, heritage, historic, historical, history, japan, japanese, medieval, nakagusuku, nakagusuku castle, nakagusukujo, okinawa, okinawa prefecture, old, outdoor, rock, ruins, ryukyu, scenery, scenic, sightseeing, stone, structure, tourism, tourist, travel, wall, world, world heritage site,