Info from Wikipedia
Gundlach Bundschu Winery is a historic winery and an outdoor concert venue located in Sonoma County. It is California's oldest continuously family-owned winery, and is the second oldest winery after Buena Vista Winery
The also serve as a music venue, with two performance stages. Gundlach Bundschu has hosted the Huichica Festival, and have partnered with music promoter (((folkYEAH))).