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Photo: Eva Prader, CC BY-SA 3.0 via Wikimedia Commons
This is a relatively new and special museum devoted to an interactive learning experience. It covers the history of the Vienne Philharmonic Orchestra, the history of Vienna as a centre of music making (Mozart, Haydn, Beethoven, Mahler, Schubert and others are documented). In addition there are the more experimental sections of futuristic composition (the Brain Opera) and sound experiences.
The Haus der Musik in Vienna opened in 2000, and is the first museum of sound and music in Austria. Across an exhibition space of 54,000 sq. ft., a range of hi-tech interactive and multimedia presentations introduce the world of music, from the earliest human use of instruments to the music of the present day.
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Austria's biggest boulder hall is in the town center. One finds tons of boulder problems to solve. They offer courses for beginners and advanced. Can get crowded on after business hours.
Casino Wien
The casino is at Palais Esterhàzy, on the famous Kärtner Strasse near the Opera and is operated by state-owned Casinos Austria. In addition there are several poker casinos (e.g. Montesino) and many, many tiny slot-machine and betting places. The latter often occur in groups of three (because there is a legal limit on the number of slot machines per venue). They do not offer any glamor or flair and are best avoided by tourists.
Winter Palace of Prince Eugene
This Baroque palace was built as a residence for Prince Eugene of Savoy, and later used for the Court Treasury and Ministry of Finance. It now houses period furnishings and exhibits detailing the biography of the prince and the history of the palace.
Kaiserbründl Herrensauna
This historic men's sauna was opened in 1889 and since then has been considered to be the premiere bathing spots of Vienna. Visitors have included Habsburg royalty and modern day celebrities.
Vienna Philharmonic
Considered one of the world's best orchestras, subscription tickets are notoriously difficult to get with a waiting list lasting up to 13 years. Individual tickets however are available in limited numbers online from the Musikverein (where performances take place) and at the ticket office.
Imperial Crypt
Underneath the Kapuzinerkirche, this mausoleum houses the tombs of generations of Habsburg royalty.