Sobon Estate winery, located in Plymouth, Amador County, is the oldest winery in California and is registered as California Historical Landmark number 762.

[1] It was started in 1856, by Adam Uhlinger a Swiss immigrant who is one of the people credited with bringing Zinfandel to America.

[2] This also makes Sobon Estate the longest continuous producer of Zinfandel in the state of California.

[3] In 1911, after Uhlinger's death in 1880, his sons sold the winery to Enrico D'Agostini.

Odziker then kept the winery for five years before selling it to Leon and Shirley Sobon who owned Shenandoah Vineyards nearby in 1989.