Gundlach Bundschus 153-year-old estate vineyard is located 35 miles north of San Francisco on the southwesterly slopes of the Mayacamas Mountain Range. Located at the southernmost point in Sonoma Valley, flanked by the Carneros district to the south and Napa Valley to the east, Rhinefarm has a unique combination of steep hillsides and cool valley floor sites, allowing us to grow a broad variety of wines at a very high-quality level.