The Wine Country is a region of Northern California, known worldwide as a premium wine-growing region, where viticulture and wine-making have been practiced since the mid-19th century. There are over 400 wineries in the area north of San Francisco, mostly located in the area's valleys, including Napa Valley in Napa County, and the Sonoma Valley, Alexander Valley, Dry Creek Valley, Bennett Valley, Livermore Valley and Russian River Valley in Sonoma County. Wine grapes are also grown at higher elevations, such as Atlas Peak and Mount Veeder AVAs.
The region is defined not only in terms of viticulture, but also its ecology, geology, architecture, cuisine and culture. Communities associated with the Wine Country include Kenwood, Healdsburg, Sonoma, Santa Rosa, Napa, Yountville, St. Helena, Calistoga, Geyserville, Petaluma, Sebastopol, Guerneville, historic Fort Ross and Ukiah.