sentences:  Vines were grown within the city walls of Vienna in the Middle Ages, although they have now been pushed into the outskirts.Riesling, Chardonnay and Pinot blanc are grown on the limestone soils towards Klosterneuburg, whereas red grapes do better on the rich soil to the south of the city.Field blends known as Gemischter Satz are common here, and most wine is drunk young in the city's heurigen.