The scene shifts to Vienna,[21] the capital of Austria, the largest city of Austria-Hungary and the heart and centre of the Austrian Empire. It is one of the most attractive cities in all Europe, and has long been renowned as the favoured home of art, music, and gaiety. You will find the city by the side of the Danube, where the river leaves the Bavarian highlands and enters the great plain. Most of it is modern, and in the Ringstrasse you may see some of the finest buildings in the world, such as the Opera House, which seats 3,000 people; the University, which contains one of the most famous of medical schools; the Parliament House of Austria; and the chief law courts of the country. [Illustration: Vienna, the capital of Austria, heart and centre of the Austro-Hungarian Empire.] The city is surrounded by the Danube and its canals, and has several parks and numerous shady avenues of trees, beneath which the gay Viennese love to stroll or sit at the tables of outdoor cafés listening to the bands. You can scarcely walk half a mile in Vienna without hearing music. The gipsy bands which are often heard in Vienna play their national airs with a dash and fire that sets even the most sluggish pulse dancing. One of the finest of all the public buildings of Vienna is the Imperial Palace, or Hofburg, which contains a library of a million volumes. The great chamber in which the books are housed is said to be the most splendid library hall in the world. Its floor of red and white marble is adorned with noble statues, and its vaulted dome, which rises 193 feet above the pavement, is covered with beautiful paintings. In the palace are preserved the crown, sword, and sceptre of Charlemagne,[22] the great Emperor of the West, who gave laws to nearly the whole of civilized Europe, and is renowned in song and story as a prince of knights, and the champion of the Christian religion. To this day he lives in the hearts of the German peoples both of Germany and Austria. They say that he still watches over them, and every autumn comes riding over the Rhine, across a bridge of gold, to bless their vineyards and cornfields with increase. In the heart of the city stands the old cathedral of St. Stephen. For more than six hundred years this magnificent pile has lifted its towers to the sky. It has seen the Crusaders halt within its shadow on their way to free the Holy Land from the infidel, and it has looked down on great hordes of conquering Turks striving to capture the city. Vienna was the high-water mark at which the progress of the Turkish flood was stayed. The Turks beat upon its ramparts in vain; they were flung back from its walls like ocean waves from the cliffs of a rocky coast. In the old cathedral you may see a huge bell cast out of cannon captured from the Turks in the last of their sieges. For centuries Vienna has been the frontier city between the Eastern and Western peoples of Europe. * * * * *