Magnificent Custom Built Post Modern home set in a secluded and pristine setting within Historic Mount Sinai. Truly a one of a kind home situated on breathtaking grounds. Winter water views, private and set away from the hustle and bustle on 1.24 acres of lush natural scenery. Being sold fully furnished with many custom built-ins. Home features; Soaring ceilings throughout, gorgeous windows to enjoy your surroundings, 5 bedrooms, 3 full and 1 half bathrooms and Hardwood Floors. Large Kitchen equipped with 6 burner Thermador stove, Bosch dishwasher, built in Miele cappuccino machine, island, breakfast bar, granite countertops, and double ovens. Cozy den offers a wood burning fireplace and custom built-ins. Formal Living room and dining room offers formal space for gatherings, Library can be used as 5th bedroom on main floor. Primary bedroom with huge bath, double sink, and jetted tub, walk in closets, 2 additional bedrooms and bath. 3 levels of living all with high ceilings and bedrooms on every floor! Enjoy entertaining outdoor with gorgeous 3 levels of paver patios, beautiful fireplace, waterfall, in ground pool, hot tub, and amply space for outdoor sitting. Property also features 15 zone in ground sprinkler system, central vac, 200 amp electric, 3 zone heating and cooling. Security system. Located close to beach, marina, hospitals, LIRR, shopping and major thoroughfares. Located within the Mount Sinai School District, this home is a must see!!