Ключевые слова: academic, ancient, architecture, baroque, blue, bonn, building, campus, castle, city, college, colorful, construction, courtyard garden, destination, education, elector, electoral, electoral castle, europe, european, famous, german, germany, heritage, historic, historical, historical building, history, landmark, majestic, meadow, monument, old, palace, park, residence, rhine, school, sightseeing, sky, study, town, travel, university, view, winter, yellow,