Tour highlights include a chance to see the Imperial Apartments, including Emperor Franz Joseph's Walnut Room and his Bedroom, which still has the small soldier's bed in which he died.
Of Empress Maria Theresa's rooms, highlights include her richly furnished and decorated garden apartments, along with her Breakfast Room with its floral artwork created by her daughters.
Highlights of the Upper Palace include the Ground Floor Hall with its statues and the Ceremonial Staircase with its rich stucco relief and frescoes.
Also worth seeing is the Marble Hall, a stunning two-story hall with numerous period sculptures, paintings, and ceiling frescoes.
Capital of the Republic of Austria and one of Europe's most visited cities, Vienna (Wien) owes much of its charm and rich history to its splendid location on the banks of the beautiful Danube River.
For centuries the gateway between West and East Europe, it was the natural nucleus of the once sprawling Habsburg Empire, and to this day remains Austria's most important commercial and cultural hub.
Vienna continues to attract visitors with its many great historic sights, as well as for its busy program of events and entertainment.
With an unmistakably cosmopolitan atmosphere, it retains a distinctive charm and flair, an effect accentuated by its fine old architecture, its famous horse-cabs (Fiaker), as well as its splendid street-side cafés with their Viennese coffees and treats.
The Lower Palace also boasts a Marble Hall, this one noted for its oval plaster medallions and rich ceiling fresco, as well as a Marble Gallery built to house a collection of historic statues.
Other notable buildings include the Winter Palace, a Baroque building that once housed the Court Treasury, the Orangery, the Palace Stables (home to the Medieval Treasury) and the Belvedere Gardens and Fountains linking the two palaces.
For more than six centuries the seat of the Habsburgs - and the official residence of every Austrian ruler since 1275 - the Hofburg is perhaps the most historically significant of Vienna's palaces.
The official seat of the Austrian President, this sprawling complex consists of numerous buildings reflecting various periods, including architectural flourishes from the Gothic, Renaissance, Baroque, and Rococo movements.
English language guided tours are available from the Visitor Center where you can also enjoy displays and multimedia presentations about the history of the building and Parliament itself. Charles Borromeo, a saint invoked during times of plague, Karlskirche was built in 1737 and remains Vienna's most important Baroque religious building.