Masterfully constructed Chateau with a main residence of over 12,000 sq.ft (per tax records), and additional improvements (pool house, car museum, music room, offices, etc.) totaling tens of thousands of additional square feet of finished space. 100+ acres, of which approximately 11 are fenced, and approximately eight are producing, with mature vineyards (per seller). Immediate, adjoining access to 100,000+ acres of dedicated open space (per SaveMtDiablo.org) for the avid equestrian, hiker, runner, mountain biker, and / or outdoor enthusiast. 15-20 car state-of-the-art car barn / museum (Car/ Motorcycle enthusiasts: As amazing as the rest of the home is, you have got to see this, to believe it!) Pool, Pool House, sophisticated mature gardens. Unparalleled privacy, and unobstructed, panoramic, 10+ mile views, of bucolic rolling hills that simply defy belief. You know you are just minutes from the City, but you can easily convince yourself that you are in the French countryside.