California currently has over one thousand wineries throughout the state, with most offering tasting rooms. From the Bordeaux-like castles of the Napa Valley to the small family-owned vineyards of the Castro Valley, Bay Area wineries are the major contributors to California's wine production. Today, California's Napa Valley & Sonoma wines are among the best in the world. Here you'll find names like Delicato, Stags Leap, Geyser Peak, Gallo and hundreds more.