Situated above San Francisco on California’s northern coast, and bordering the Napa Valley, Sonoma County produces a greater variety of wines than any other wine-producing area in the world. The appellation has 60,000 acres planted to wine grapes and includes 13 distinct American Viticultural Areas. Thanks to the diversity of soil and climate, vineyards in Sonoma County grow Chardonnay, Gewurztraminer, Sauvignon Blanc, Viognier, Pinot Gris, Cabernet, Merlot, Syrah, Sangiovese, and Zinfandel grapes which are used to produce both sparkling and still wines. Chardonnay is the most planted variety with 15,400 acres, and Cabernet Sauvignon is the next most popular variety with 11,800 acres. The region has 260 wineries, and boasts the oldest commercial winery in California, Buena Vista, which was founded in 1857.