The Rheingau wine region: pure zest for life. The main grape varieties grown in the Rheingau are riesling and pinot noir. The Rheingau has a long tradition of wine-making, started by the abbeys many centuries ago. This reputation opened the doors to all the big stately homes for the Rheingau wineries as suppliers of premium vintages. The Rheingau also enjoys an excellent reputation worldwide as the home of the Centre for Viticulture and Oenology in Geisenheim.