On the Silverado Trail near Napa just north of town sits a stately building that could be a Persian castle. That is Darioush, a winery with an Iranian flare. The wines are big bold reds with a few experiments in white wine as well. All great wines. My personal favorite is the Duel a Cabernet Savignon / Shiraz blend. They have a nice gift shop in the tasting room and private areas for the wine club members. Their staff is knowledgeable both about the wines as well as the history of the vinyard. As with most places the tasting fee is waved for wine club members and if you purchase wines.