The winery owns the oldest vineyard north of San Francisco, planted by Franciscan monks in 1825 to make sacramental wines at the Mission. After the Mission was secularized, General Vallejo made award-winning wines from these grapes. An Italian immigrant called Samuele Sebastiani bought the vineyard in the early 1900s, and his family has produced wine from it ever since.
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Sonoma State Historic Park
Founded in 1823 as the last of the Spanish California missions, in part by Mariano Vallejo to check the Russian's impact in Northern California. Site of the first vineyard in Sonoma County. This is where the Bear Flag Revolt took place in 1846. It was bought by the California Historic Landmarks League in 1903 and restored in 1913. Though it was the last mission, it was the third structure in California to be designated a State Historic Landmark.
Sojourn is in a cute house just off the Plaza. As this is known as one of the best Pinot Noir producers in Sonoma, you may opt to do a tasting solely focused on Pinot. Friendly people and a great experience if you're interested in a more exclusive - but still friendly and laid back - wine tasting experience.
Historic movie theatre built by wine mogul Samuele Sebastiani in 1933. Shows first run and retro films and also has great and varied live music and special events. Stop by the original ticket booth for a quirky photo op.
Sigh is the only champagne and bubbly tasting room in Sonoma. Woman-owned and cute and quirky inside, tables are decorated with bottle tops and it's the only place in town where they will teach you how to saber your own champagne bottle (on Saturdays). Flights and bottles are available - a great place to buy a bottle and go sit on the Plaza too.
Sonoma's Pacific Western League baseball is a true American baseball experience. Fun, cheap and entertaining, the Stompers are the best team in the league. Get Grandstand tickets - they're the best and just behind home base. Grilled hot dogs and meatball sandwiches with good Sonoma wine and beer available.
A modern and contemporary art museum with no permanent collection. They also have a library onsite for those doing research on fine art.