Chateau Montelena is a historic winery located in Calistoga, California, known for its stunning architecture and beautiful gardens. Founded in 1882, it played a significant role in the California wine industry and is famous for its Chardonnay, which won the 1976 Judgment of Paris wine tasting, elevating the reputation of American wines. The winery is situated on a picturesque estate that features a picturesque stone castle and a serene lake. Visitors can enjoy guided tours, tastings, and the scenic surroundings, making it a popular destination for wine enthusiasts and tourists alike.