Ключевые слова: architecture, austria, austrian, austrian president, building, capital, castle, city, dynasty, europe, european union, facade, habsburg, historic, hofburg, hofburg palace, imperial library, imperial palace, landmark, landscape, library, new castle, new palace, osce, palace, people, president, probst, residence, sight, sightseeing, square, tourism, tourists, travel, unesco, vienna, world heritage,