For the better part of the afternoon, drive the eight miles from St. Helena to Calistoga for some spa time. This quirky, little town is best known for its healing mineral waters from natural hot springs, plus mud baths that’ll make your skin as smooth as a newborn. Make an appointment for a spa treatment ahead of time; there are so many local spas to choose from...hip boutique gems like Dr. Wilkinson’s Backyard Resort & Mineral Springs.