Follow the famous Silverado Trail - named in honor of the silver that was discovered in 1858.
Visit as many of the wineries as you like, but a visit should definitely include Stag's Leap Wine Cellars!
Why? Because Stag's Leap is one of the wineries that made Napa Valley world famous in 1976 when they won the red wine portion of the Judgment of Paris wine competition against the French!
See more at Discover Northern California: http://tinyurl.com/3ltlsky