Ключевые слова: ancient, architecture, belgium, blue, building, canal, castle, city, culture, day, defense, europe, european, famous, flanders, fort, fortification, fortress, gent, ghent, gravensteen, heritage, historic, history, impressive, landmark, magnificent, massive, medieval, middle age castle, middle ages, monument, old, outdoor, power, rampart, reflection, river, scenic, sightseeing, stone, tourism, tourist, tower, towers, town, travel, unesco, water,