About Gundlach Bundschu Winery
Gundlach Bundschu Winery holds a distinction shared by no other California winery: it is the oldest continuously family-owned winery in the state. Bavarian-born Jacob Gundlach founded the estate in 1858, months after Agoston Haraszthy established Buena Vista just down the road, and six generations of the Bundschu family have farmed the 320-acre Rhinefarm estate continuously ever since, through Prohibition, two World Wars, the 1906 earthquake, and the transformation of Sonoma County from a pastoral agricultural backwater to one of the world's most celebrated wine destinations.
The 320-acre Rhinefarm estate is now certified regenerative organic, a distinction that places Gundlach Bundschu at the leading edge of California's sustainability movement while honoring the German immigrant farming philosophy that Jacob Gundlach brought from Bavaria in 1858. The estate sits at the crossroads of the Sonoma Valley, Los Carneros, and Napa Valley AVAs, with diverse terrain that produces Gewürztraminer, Cabernet Sauvignon, Chardonnay, and Pinot Noir from genuinely distinct micro-terroirs.
Beyond the wine, GunBun, as locals affectionately call it, has built one of Sonoma County's most beloved summer concert programs, hosting music in the estate's natural outdoor amphitheater with views across the Rhinefarm vineyard. Cave tours, picnic grounds, dogs, and families all welcomed.
The 2026 season at the Rhinefarm leans hard into live music. The winery debuts Soundcheck on Sunday, October 4 - an inaugural daytime festival with live acts on the Amphitheater stage led by Tropa Magica, DJ sets, local food trucks, and wine tasting experiences ($55 public, $35 for Bacchus Club members, kids 10 and under free). It joins a packed calendar: the monthly Rhinefarm Afterhours evening series of wine, culture, and vinyl sets; Beach Bunny and The Beths in concert on August 12; and the Sonoma Valley Vintage Festival Grand Tasting at the historic Sonoma Barracks, September 25-27.
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California's Oldest Family WineryContinuously family-operated since 1858.
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Historic Sonoma Valley EstateA working ranch with a tasting room overlooking the Carneros-influenced vineyards.
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Live Music & EventsFamous for outdoor summer concerts and member events on the estate.
California’s oldest family winery, a uniquely casual Sonoma Valley estate with great events and reliable wines.
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Featured Wines
Gewürztraminer
Rhinefarm Estate Gewürztraminer
Sonoma Valley Estate
The GunBun signature white, regenerative organic estate Gewürztraminer from the oldest continuously family-owned vineyard in California, showing the spiced, floral, food-friendly character of this Alsatian variety in 160+ years of Bundschu family farming.
Cabernet Sauvignon
Rhinefarm Estate Cabernet Sauvignon
Sonoma Valley Estate
Six-generation Rhinefarm Cab from the regenerative organic Bundschu estate, Sonoma Valley Cabernet produced on the same land that Jacob Gundlach first planted in 1858, with a genuine historical depth that no newer producer can claim.
Pinot Noir
Estate Pinot Noir
Carneros · Sonoma Valley Estate
Rhinefarm estate Pinot Noir from the Carneros-influenced portion of the 320-acre property, cool-climate, elegant, and benefiting from the same regenerative organic farming philosophy that distinguishes GunBun across all varieties.
Chardonnay
Chardonnay
Sonoma Valley Estate
Regenerative organic estate Chardonnay from the 320-acre Rhinefarm, six generations of Bundschu family farming knowledge applied to California's most popular white variety on the oldest continuously family-owned vineyard in California.
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Cave Tour & Estate Tasting
Daily estate tasting with optional cave tour at California's oldest continuously family-owned winery, regenerative organic Gewürztraminer, Cabernet, and Pinot Noir from six generations of Bundschu family Rhinefarm farming since 1858. Dogs and picnics welcome.
$30
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Summer Concert Series
Summer concerts in the Rhinefarm natural outdoor amphitheater, one of Sonoma County's most beloved annual music programs, pairing live performances with estate wine on the 320-acre regenerative organic property.
From $40 (event pricing)
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