Michigan's first urban winery. Pentamere Winery is an urban boutique winery, located in historical downtown Tecumseh, Michigan. Our passion is to explore the distinctive native characteristics and rich diversity of grapes and fruit grown in the Great Lakes Basin. We have hand crafted high quality wines, which will satisfy the most avid connoisseur and delight the inquisitive newcomer. Pentamere is known for our delightfully sweet and light fruit wines as well as our big dry reds.