The winery is located in the municipality of Oggau in the Leithaberg DAC region of Burgenland (Austria). It has been in the family since 1632. Son-in-law Christian Händler and his nephew Tobias Siess manage the vineyards and cellar. Rafaela, his wife, runs the office. Son-in-law Matthias Siess and his son Sebastian are responsible for sales and marketing. His wife Maria runs the estate inn "Zum Herztröpferl". The vineyards cover 33 hectares of vines in the Altenberg, Haide, Isel, Marienthal, Neugebirge, Pratsche, Satz Zeisl and Steinhut vineyards. 75% of the vineyards are planted with the red wine varieties Blaufränkisch, Zweigelt, St. Laur ent, Cabernet Sauvignon, Cabernet Franc and Merlot, and 25% with the white wine varieties Welschriesling, Pinot Blanc, Chardonnay and Sauvignon Bl anc.