Own a private castle and its flagstone-paved walled garden. This stone mansion was designed by noted architect Frank J. Forster and built by the prominent shipping line owner Giuseppe Cosulich, possibly to mimic the family's 16th century castle in Croatia, now a hotel. The house sits yards from the highest point in New York City. It has five bedrooms and 4.5 bathrooms. It boasts a distinctive entry room, giant front doors, a two-story turret (a ground-floor breakfast nook and second-floor study), a beamed living room with a raised wood-burning fireplace and a library behind it. The kitchen, totally redesigned, has a Jade professional 8-burner, 2-oven stove with grill, a Sub-Zero refrigerator, marble countertops, 2 dishwashers and sinks, and modern European cabinetry. The master bedroom suite has its own wing and boasts a dressing room. This glorious house has the original floors and woodwork, re-stained a rich mahogany, plus new lighting and Internet connections throughout, a 9-zone Mitsubishi air-conditioning system, 6 Bose sound systems, and 4 flat-screen TVs. A new feature is the Siedle system for Iphone or Ipad allowing you to see who's at the door or to communicate with your visitors from the comfort of your sofa or wherever you are in your home. In the basement are a large 2-washer laundry room, a smaller storage room/office, and a 2-car garage. Beyond the sunlit patio are high-shade trees to the east and terraced flowerbeds along the south and west. The northern woods hold spring and fall wildflowers.