Situated high atop coveted Gilmartin Drive in Tiburon, this architectural masterpiece combines high-design, utmost privacy, and breathtaking views of the Golden Gate Bridge, Richmond Bridge, Richardson Bay, Mount Tamalpais and partial San Francisco Skyline, offering life at the top of it all. Designed by Sandy Walker to graciously honor symmetry, streamline moderne architecture, and to capitalize on the location and views, the estate is unique and is available for the first time on the market. Perfectly sited on approx. 1.23 level acres with established gardens, the approx. 5,575 sq. ft. home offers four bedrooms, four-full and two-half bathrooms, and the finest craftsmanship and finish throughout, including 10-11 ft. ceilings. And for the tennis enthusiast, a private 116 ft. by 56 ft. tennis court has epic panoramic views overlooking the horizon.  Approached through an expansive drive, the home's dramatic double-height foyer commands attention, graced with a grand curved staircase adorned with natural light from the atrium’s impressive 16-ft. diameter skylight above. The home's upper level features the main living spaces, including the formal dining and living rooms, chef's kitchen, breakfast room and butler's pantry, family room, and the primary suite complete with a spa-like bathroom and large walk-in wardrobe. The lower level has three ensuite bedrooms, a large home office, an exercise room with kitchenette, and three-car garage. Additional highlights include an elevator, three fireplaces, a wine room, an expansive patio with spa, two upper-level terraces, a lush level lawn, rose gardens, and a large motor court. In addition, extensive smart home features including CCTV 10-camera surveillance, Lutron lighting, HVAC 6-zone controls, automated window coverings, and more. Located just minutes from San Francisco, the fine dining and boutiques of Tiburon, and benefiting from access to one of the nation’s top-school districts, 147 Gilmartin is an unprecedented opportunity for the most discerning of buyers.