The castle Seggau in the südsteiermark (Austria) is not only an international convention, conference and seminar center, but has also been committed to wine and viticulture for centuries. The castle is also home to the "episcopal wine cellar Seggau". In the period 2007 to 2019, the vineyards were rented by the winery Polz Erich & Walter managed, from 2020 this has the state vineyard Silberberg accepted. The vineyards cover ten hectares of vineyards in the large Sausal with the individual layers Einöd and Kainberg. They are with the white wine varieties Riesling, Pinot Blanc ( Pinot Blanc ), Pinot Gris ( Pinot gris ) Sauvignon Blanc, Yellow muscatel and Traminer, as well as the red wine variety Zweigelt planted. There is a natural, environmentally friendly management. The product range also includes one altar wine, The 300-year-old wine cellar, 75 meters long and 8.5 meters high, is one of the largest and oldest in Europe. There are regular wine tastings under the title "In Vino Veritas" instead.