Even if red wines typically aren't your jam, a Napa Valley cab might change your mind. A huge producer of the grape, this popular wine-lover's destination is brimming with vineyards. Explore on wheels with the Napa Valley Wine Train, where you'll be treated to gourmet four-course meals and stunning vistas. The valley is also a foodie hub, so get ready for delicious eats, as well.
Best month to go: April, before the Summer crowds pick up