the development of horseshoeing from the Romans to the present day. The Vienna Fisheries Museum presents its visitors with information on local fishing through the ages, featuring an exhibition of rare specimens of native fish, aquariums, ancient writings and exhibits, fishing gear and fish-eating animals. In Jedlesee, at the former estate of Countess Anna Maria Erdődy, a memorial to Ludwig van Beethoven was established. Choirs The choral group Harmony (exact name: Floridsdorfer Chorvereinigung "Harmony 1865"; founded: 1865) is a mixed choir, consisting of an average of 40 members. It gives regular performances, for example during Festival-week and Christmas, always with a program appropriate to the season. The choir makes occasional concert tours: to Kraków most recently, also to Rome and Tuscany. Twin municipalities Angyalföld Katsushika Sports clubs Floridsdorfer AC Austrian gymnastics and sports Union Donaufeld Leopoldau Sports Union See also Lokomotivfabrik Floridsdorf - locomotive works in Floridsdorf References Sources "Wien - 21. Bezirk/Floridsdorf", Wien.gv.at, 2008, webpage (15 subpages): Wien.gv.at-floridsdorf. Felix Czeike: Wiener Bezirkskulturführer: XXI. Floridsdorf ("Vienna District Cultural Leader: XXI. Floridsdorf"). Jugend and Volk, Vienna 1979, . Raimund Hinkel, Kurt Landsmann, Robert Vrtala: Floridsdorf von A-Z. Der 21. Bezirk in 1.000 Stichworten ("Floridsdorf from A-Z: the 21st District in 1,000 words"). Brandstätter, Vienna 1997, . Kurt Landsmann: Floridsdorf 1945: das Kriegsende. Ein Beitrag zur Zeitgeschichte ("Floridsdorf 1945: The War's End: A View of Time History"). Brandstätter Verlag, Vienna 1995, . Carola Leitner (Hg.): Floridsdorf: Wiens 21. Bezirk in alten Fotografien ("Floridsdorf: Vienna's 21st District in Old Photographs"). Ueberreuter, Vienna 2006, . Peter Schubert: Jugendstil & Co: Hausschmuck in Floridsdorf 1880–1930 ("Houses in Floridsdorf 1880–1930"). Mayer, Klosterneuburg 2001, . External links District community Floridsdorf Official Website on Archive.org District Museum of Floridsdorf SCN official Website (Shopping Center Nord) Districts of Vienna