Location Location Location! A truly iconic offering—The Sunnyside Chateau, a private mansion, nestled in the heart of the renowned Top-of-the-Hill neighborhood. This home was built by famed architect George C. Mason as his personal Gilded Age Mansion. This ideal spot offers fast access to beaches, private education, fitness activities, sailing, culture and dining. This masterpiece has been meticulously restored throughout all 4 levels of pristine living space. Expansive grounds on a corner lot on a private road, it features an outdoor kitchen, patio, iconic three-story tower, and a charming Teak veranda for outdoor relaxation. The home is move-in ready, with customization options available. Included notable amenities are a dry sauna, wine cellar for 300 bottles, a home theater, Chefs Kitchen, panic room/lounge and smart technology throughout. All bedrooms are en-suite with primary suites offer luxurious clawfoot tubs and walk-in closets. The kitchen boasts a 6-burner cooktop, commercial-grade appliances, a Vermont Castings gas fireplace, and radiant heated floors. With 14 working fireplaces, soaring ceilings, gleaming inlay floors, and rare, premium wood finishes—including American Chestnut, Mahogany, Butternut, Fir, and Oak—this home exudes historic grandeur. Additional highlights include artist studio, yoga room, wet bar, and lots of parking. Review the Maintenance and Update packet for a room-by-room list of extensive updates. Inquire for supplemental information.