Click here to meet the Getaways staff or see all their favorite deals. Napa Valley Winery Tour Together, Napa Valley and Sonoma County make up the most renowned wine region in California—and the country—with more than 400 wineries in Napa Valley and 200 in Sonoma. On this five-day, four-night adventure from Authentic Wine Country, you'll tour some of these vineyards, chat with winemakers, and sip the fruits of their labors. Click to view the full itinerary. Day 1: After you arrive in Napa Valley, take the day to sightsee on your own. Suggested spots include the towns of St. Helena, Yountville, and Calistoga, a spa town that recalls the Old West with wooden sidewalks and mountain views. There, you can lounge in the natural hot springs and mud bath, or head to the general store, a landmark that dates back to the late 1850s.