Wineries are facilities where wine is produced, typically from grapes. They often include vineyards, where grapes are grown, and processing areas for fermentation and aging. Wineries can vary in size, from small family-owned operations to large commercial enterprises, and they may offer tours and tastings to visitors. In addition to producing wine, many wineries also focus on sustainable practices, such as organic farming and water conservation. Some wineries have tasting rooms where guests can sample different varieties of wine, learn about the winemaking process, and purchase bottles directly. Popular wine regions include Napa Valley, Bordeaux, and Tuscany.