Exceptional hospitality and well-balanced wines from southern Napa Valley grapes are the hallmarks of this winery whose flamboyant architecture recalls the ancient Persian capital Persepolis. Several wines, including the signature Napa Valley Cabernet Sauvignon, combine grapes grown high on Mt. Veeder with valley-floor fruit, the former providing tannins and structure, the latter adding mellower, savory notes. Viognier, Chardonnay, Merlot, Pinot Noir, and a distinctive Cab-Shiraz blend are among the other wines made here. Except on Saturday, walk-in parties can taste at the bar, but an appointment is required at all times for seated tastings that range from a cheese-wine pairing to a sit-down with owner Darioush Khaledi in his private wine cellar.