No other capital in Europe has more charm(迷人) or a richer past than Vienna, the capital of Austria. Green woods, mountains, and the large Danube River give the city beautiful surroundings. Vienna has more than 1 600 000 people. Almost one-fourth of all the people of Austria live there. Vienna is sometimes called 'a city without a country'. It is so big that it does not seem to be suitable (适合的) in so small a country as Austria. Vienna was a center of science and art and music, too. Many great musicians lived there. It had the name of being a city of spirits, partly because of the dance music and operettas(轻歌剧) written by Viennese musicians. After World War I, Vienna found itself the capital of a rather poor country of less than 7 000 000 people. World War Ⅱ made Vienna even worse than it was before. Since 1955, however, Vienna has been fast regaining its past greatness. Vienna is a city which is ______.