NAPA VALLEY A slight scent of pine hangs in the air as you stroll up to the tasting room at Chateau Montelena, tucked into a hill on Tubbs Lane in Calistoga. Visitors to Stag's Leap Wine Cellars can choose from a $15 standard tasting or a $40 "estate tasting." Chateau Montelena Winery in Calistoga hosts library tastings, where, for $25, a visitor can learn about wine history and taste a flight of five vintages in an intimate setting. Chateau Montelena Winery in Calistoga. Stag's Leap Wine Cellars, home of the cabernet sauvignon that beat the best French reds in the 1976 "Judgement of Paris," offers winery tours as well as tastings. ...