This landmark Venetian estate offers unmatched luxury and privacy with panoramic ocean views. Castello della Costa d'Oro's many dramatic spaces include a master suite with exclusive spa and two-story wardrobe, a presidential office suite, the ultimate professional kitchen plus catering kitchen, a theater and wine cellar with secret passageway. Regal entertainment hall, and for even larger events, the soaring pavilion with penthouse. Extensive amenities encompass a four-bedroom guesthouse, manager's residence, administration office, equestrian facilities, vineyard and helipad. The property is ideally located at the heart of California's most exciting premium wine region, with a protected marine environment offshore.