This is a great stop to start or end your visit of the Wine Country. They have wine tastings and classes. The tours and exhibits are very informative and interesting. There's also a shop and cafe.5
I take my out-of-town guests to Copia as part of our Napa wine tour. They have good exhibits, an excellent cafe, interesting lectures and nice facilities. It really shows how wine and food go hand in hand.
PROS: good exhibits, great cafe