St.Supery GroundsSt.Supery SignSt. Supery, 6/21/09. Score: 95%. We received awesome customer service throughout. Great place to bring visitors. Two levels of tasting available. Art on display. Self guided tour. Great place for picnic but bring your own food (another plus in our opinion). This is a “must see” for touring Napa Valley. Take a look at their website for a preview here.