Gundlach Bundschu, founded in 1858 by Jacob Gundlach, holds the distinction of being California's oldest continuously family-owned winery. Located in Sonoma County, the winery's Rhinefarm estate vineyard, now Regenerative Organic Certified®, produces small lots of ultra-premium wines, specializing in Bordeaux reds, cool-climate varietals, and Gewürztraminer. Beyond its celebrated wines, Gundlach Bundschu is also known for its lively culture, hosting concerts and events, embracing a fun, unpretentious atmosphere alongside a deep respect for tradition and quality winemaking.