Mumm Napa is one of California's top sparkling wine producers and one of the most popular destinations for wine country visitors. For more than 25 years, Mumm Napa sparkling wines have set the standard for California méthode traditionelle, emphasizing the exceptional qualities of Napa Valley fruit along with the unique casual elegance of Napa Valley style. The winery and visitors' center are located in Rutherford along the Silverado Trail in the Napa Valley. Mumm Napa is open daily for tastings from 10:00 a.m. to 6:00 p.m. Reservations are required. All guests must be 21 years of age and older.