Welcome to this spectacular Mid-Century Modern residence designed by renowned architect Roy S. Johnson, perfectly positioned atop a hill with breathtaking water views of Lloyd Harbor and the surrounding community. Showcasing Johnson's signature architectural elements—including dramatic triangular rooflines, soaring vaulted ceilings, expansive walls of glass, and seamless indoor-outdoor living—this extraordinary home masterfully blends modern design with its natural surroundings. From the moment you arrive, you'll be captivated by the serene setting and striking architecture. A charming front pathway leads to a welcoming porch where you can relax and take in the peaceful surroundings before stepping inside. The home is flooded with natural light, highlighting the beautiful hardwood floors, oversized rooms, and thoughtfully designed open floor plan. The spacious living room features panoramic water views, a stunning floor-to-ceiling brick fireplace, and sliding doors leading to a deck overlooking Lloyd Harbor. Adjacent to the living room, the family room is enhanced by new skylights and offers direct access to both the side deck and rear patio, further embracing the home's connection to nature. The eat-in kitchen features a second floor-to-ceiling brick fireplace and a dining area designed for both everyday living and entertaining. The main level also includes a second primary en-suite bedroom, two additional generously sized bedrooms. The private primary suite occupies the upper level, offering a tranquil retreat with its own en-suite bath and spectacular water views. A distinctive loft area overlooks the living spaces below and waterview which provides an inspiring vantage point to enjoy the surrounding landscape. The finished lower level with walk out access offers exceptional flexibility, featuring a private apartment with a newly renovated full bathroom, abundant storage space, a wet bar, and an expansive recreation room with sliding doors leading to the backyard. This versatile space is ideal for hosting gatherings, entertaining guests, or accommodating extended family. Located within the highly sought-after Fiddlers Green Beach Association, residents enjoy access to a private community dock with mooring rights, as well as deeded access to a Long Island Sound beach where community events and gatherings are held throughout the year. In addition, residents have access to the Village of Lloyd Harbor Beach, offering summer camp programs, tennis, pickleball, swimming, and additional mooring rights. A rare architectural treasure in one of Long Island's most desirable waterfront communities, this one-of-a-kind home offers an unparalleled combination of design, comfort, privacy, and natural beauty. Additional Information: prestigious Cold Spring Harbor Schools! Condition Mint! 4 Cars Garage. $1800/year association dues – Fiddlers Green Beach Association