(CNN) - Sitting inside the quaint tasting room of Chateau O'Brien, an award-winning French-style winery in the Blue Ridge Mountains of Northern Virginia, co-owner Debbie O'Brien pours some of the best red wine in the region. The original structure for Chateau O'Brien was an old French farmhouse that Howard O'Brien, Debbie's husband, transformed into a first-class winery known for its large copper doors, wrap-around sundeck and rich aged wines that include a medium-bodied Malbec, a full-bodied Cabernet Franc, an elegant Petit Verdot, and the fast-selling Tannat Limited Reserve and Late Harvest Tannat.