Ключевые слова: ancient, architecture, asia, asian, bridge, building, capital, castle, citadel, city, culture, destination, dynasty, earth, east, emperor, entrance, famous, forbidden, fort, fortress, gate, heritage, historic, historical, historical building, history, hue, imperial, indochina, landmark, national, nguyen, old, operation, palace, royals, site, temple, tour tourism, traditional, travel, vietnam, vietnamese, view, wall,