Ключевые слова: aged, ancient, architecture, autumn, bastion, benelux, building, castle, citadel, colorful, defense, europe, european, exterior, facade, fall, famous, forest, fort, fortification, fortress, gorgeous, heritage, highland, hill, historic, historical, landmark, landscape, large, luxembourg, luxemburg, mediaeval, medieval, multicolored, outdoor, palace, royal, sightseeing, stone, tourism, tourist, tower, travel, tree, unesco, vacation, valley, vianden, wall,