Michigan wine refers to any wine that is mae from grapes grown in the U.S. state of Michigan. As of 2007, there were 1,500 acres (6 km²) under wine-grape cultivation and 50 commercial wineries in Michigan, producing 375,000 cases of wine. Wine and wine tourism were estimated in 2007 to be a $100 million industry. Most of the quality bottled wine of Michigan is produced in the four listed American Viticultural Areas (AVAs) of Fennville AVA, Lake Michigan Shore AVA, Leelanau Peninsula AVA, and the Old Mission Peninsula AVA.