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Photo: Jorge Royan, CC BY-SA 3.0 via Wikimedia Commons
The park is famous for the big variation of beautiful roses and features old platanes. There is a monument for Empress Elizabeth and in the middle a neoclassical Theseus temple.
The Volksgarten is a public park in the Innere Stadt, the first district of Vienna, Austria. Opened in 1823, it was Vienna's first public park.
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Parliament Building
The home of the two houses of Austrian Parliament. The building was designed by Theophil von Hansen in the Neoclassical style, and constructed between 1873 and 1883. Guided tours are offered in German or English.
Heroes' Square
A public space in front of the Neue Hofburg, setting to a number of important historic events, most notably of Adolf Hitler's 1938 announcement of the Austrian Anschluß. Two 19th-century equestrian statues portray Archduke Charles of Austria-Teschen and Prince Eugene of Savoy.
Natural History Museum
This museum was erected as a mirror to its twin museum, the Museum of Fine Arts. It exhibits various minerals, meteorites, fossils, stuffed animals, and skeleton reconstructions of dinosaurs and other. It also includes an anthropological section, where you can see the beautiful Venus of Willendorf which is 25,000 years old. Most signs and explanations in the museum are only in German, and you will likely receive little sympathy for this from museum staff. Expect museum guards to rush you out at least 15 minutes before closing time.
The building was completed in 1888 and is home to one of the most respected German-language theaters, as well as the second-oldest theater in Europe. Non-German speaking visitors will find the building itself worth visiting, as the foyer contains paintings by Viennese artists Gustav and Ernst Klimt, and Franz Matsch, which can be viewed with a tour.
Imperial Treasury; aka the Secular and Ecclesiastical Treasures
The best part of the Hofburg and an absolute must. It contains the Habsburgs' collection of jewels, crowns, and other valuables, perhaps the best on the Continent. Second only to a tour of the Kunsthistorisches Museum, of which the Schatzkammer is a part. There are 20 rooms of priceless treasures that give a fairly accurate representation of the ceremonial Habsburg court life over the centuries.
Chapel of the Imperial Palace
The original chapel of the Palace, built in Gothic style 1447-1449, was made over in Baroque style. On Sundays and Catholic holidays (of which the Austrians celebrate many), the Court Musicians perform here. This group is made up of members from the Vienna Boys Choir, as well as performers from the orchestra and choir of the Vienna State Opera. Tickets can be purchased online here.