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Casto Oaks Fine Wine & Art Gallery

Winery or Winery Tasting Room

Casto Oaks Fine Wine and Art is the perfect pairing - award winning wine and fine art - from Mariposa County. Our art gallery features local artists representing a variety of media including oils, acrylics, watercolors, pastels and photography. You will also find unique handmade jewelry as well as wine-lover's gifts and accessories.

Harold & I are stewards of 6 acres of these vines. JK Smith, our grandson, has joined our family vineyard as our winemaker. We prune, we trellis and train, we watch their growth through the seasons, we harvest, we press, and we bottle. We purchase our Cabernet, Merlot and Syrah from Mariposa vineyards to truly make great wines from Mariposa County.

Our twenty-two year old Zinfandels are suited perfectly for the climate and soil conditions of the Mount Bullion Valley along scenic Highway 49. These Zinfandel vines are hardy, produce small amounts of fruit per acre and make an absolutely wonderful red wine. The wines made from all Mariposa County grown grapes, are distinctive, rich and full bodied. In addition to several varietals and blends, Casto Oaks features a deliciously unique Zinfandel Port.

Our winery, Mount Bullion Vineyard, is located at 6947 Highway 49 North in Mariposa where grapes are grown, fermented, barreled and aged, bottled and cellared. A visit to the winery can be accommodated by appointment only.


Noon - 6 pm, later on weekends; Closed Tuesday & Wednesday

Seasons Open

Year round

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