The Hermann AVA is an American Viticultural Area located in Gasconade County, Missouri, and entirely contained within the larger Ozark Mountain AVA. The wine appellation is located on the southern side of the Missouri River near the town of Hermann, about halfway between St. Louis and Jefferson City. The AVA covers the northern-most hills of the Ozark Plateau with many of the 200 acres (80 hectares) of vineyards planted along hillside locations.