"The Wachau Wine Region The Wachau UNESCO World Heritage landscape is also one of Austria’s most important wine regions. Along this part of the Danube terraced vineyards produce fruity Rieslings and Grüne Veltliners, two of Austria 's most popular white wines. Autumn is the perfect time to visit when the Hueriger wine taverns open up to serve fresh wines from the most recent harvest. Be sure to visit Nikolaihof winery in Mautern, said to be the oldest in Austria."