The winery is located in the municipality of Ingelheim (Bingen area) in the German wine growing region of Rheinhessen. It was bought in 1900 by Heinrich Opel, one of the sons of the automobile pioneer Adam Opel. Today it is managed in the fourth generation of the family by the great-great-granddaughter Ivonne Gräfin von Schönburg-Glauchau and husband Johannes Graf von Schönburg-Glauchau. Toni Frank is responsible as cellar master. Schloss Westerhaus occasionally serves as a backdrop for film productions. A three-day castle festival with jazz is always held at Whitsun.
The vineyards cover a total of 18.5 hectares. These are the rounded monopollage Schloss Westerhaus with 13 hectares on strongly skeletonized limestone and sunny slopes (Ingelheim), as well as the monastery garden and sunny mountain (Schwabenheim). The two main grape varietiesPinot Noir and Riesling each occupy about one third of the area. Other varieties cultivated arePinot Blanc, PinotGris, Chardonnay and Auxerrois. The environmentally friendly cultivation is carried out with consideration of sustainability and promotion of biodiversity (species diversity), especially at the Westerberg site. Only ripe and healthy grapes are selected by hand for processing.