Opus One is the landmark Oakville estate born of a 1979 partnership between Robert Mondavi and Baron Philippe de Rothschild of Château Mouton Rothschild — the first great Franco-American joint venture in wine. The estate produces a single Cabernet Sauvignon-based Bordeaux blend each vintage (plus the second wine, Overture) from vineyards surrounding its iconic architectural winery, and it remains one of the most recognized luxury wine brands in the world.