There are four main Wine growing areas in Austria. Burgenland, Lower Austria, Styria and Vienna.
Lower Austria: Wachau, Kremstal, Kamptal, Traisental, Wagram, Weinviertel, Carnuntum, Thermenregion Burgenland: Neusiedlersee, Neusiedlersee-Hügelland, Mittelburgenland, Südburgenland Vienna (Wien) Styria: Südoststeiermark, Südsteiermark, Weststeiermark
Wine Festivals in Austria information can be found here.