This private 144-acre estate is a secure, secluded compound, at the heart of which is a striking four-bedroom modernist home. Boasting an impressive 8,566 square feet, it features magnificent stonework; custom walnut, pear burl, and African teak woodwork; 2 owner's suites; a living room with 18-foot ceilings and walls of glass; a generous kitchen with a keeping room, pantry and bar; two offices; a screened porch with a fireplace; a verandah; a 3-car garage; and a resistance and plunge pool with an outdoor shower. Enveloped by 3,000 acres of protected wildlife habitat, the gated, fenced grounds include a pond, seasonal creeks, gardens, olive groves, and numerous hiking, biking, and equestrian trails and roads with access to miles of protected trailheads. Fire prevention updates among them hydrants and sprinklers have been added, and the property is served by the Valley of the Moon Water District. The location, on the west side of Sonoma Mountain, is minutes from the town of Sonoma.