St. Supery is a stop for anyone interested in learning more about Napa viniculture. An extensive educational exhibit is on hand, including a sample vineyard and the fabled SmellaVision display. SmellaVision is a very useful tool for learning how to distinguish between different varietals and regions in a wine's bouquet. Saint Supery's wine is highly regarded. It is, of course, available for tasting and purchase. Visit the website for tour details and prices.