Home to some of the most sought-after?Cabernet Sauvignon?in America, Napa Valley?s Oakville district stretches across the center of Napa’s valley floor and foothills between the Vaca and Mayacamas Mountains. This AVA is home to the legendary To Kalon Vineyard and Martha’s Vineyard, as well as many powerhouse wineries including Screaming Eagle, Silver Oak, Robert Mondavi, Opus One, Far Niente and Groth.