Founded around 1900 by Samuele Sebastiani, this estate now stands as one of Sonoma County's largest wineries, with products ranging from their signature Cherryblock Cabernet Sauvignon to the Sonoma Valley merlot from their Appellation Collection. Tours of the estate include visits to the wine presses, trips to the cellar to see the hand-carved casks, and, of course, wine tastings. The Marketplace is open daily for those wanting to pick up a bottle of Sauvignon or Merlot as a memento.