Château St. Jean is notable for its exceptionally beautiful buildings, expansive landscaped grounds (extensively damaged in a 2017 wildfire), gourmet market-like tasting room, and tasty wines. Among California wineries, it's a pioneer in vineyard designation -- the procedure of making wine from, and naming it for, a single vineyard. A private drive takes you to what was once a 250-acre country retreat built in 1920; a well-manicured lawn overlooking the meticulously maintained vineyards is now a picnic area, complete with a fountain and picnic tables.

In the huge tasting room—with a charcuterie shop and housewares for sale—you can sample Château St. Jean's bounty, from chardonnays and cabernet sauvignon to fumé blanc, merlot, Johannesburg Riesling, and Gewürztraminer. Tastings are $10 per person, $20 per person for reserve wines.