An architectural stunner & private oasis on an idyllic three-home cul-de-sac in Ardsley Park. This fabulous setting is pure serenity a wildly pretty half-acre nature retreat cocooned by rolling lawns and lush evergreens, yet just a stroll to town and train, and steps to the Old Croton Aqueduct trail. Designed to live, work & play with ease, this dazzling contemporary has a beautiful flow from the 2-story entry w/ travertine floor, to the stunning open-plan Carrara marble kitchen & family rm with French doors to the stone patio. Walls of windows showcase light & nature at every turn from the sun-drenched breakfast area to the formal dining rm with glass pocket doors, to the ultra-stylish living rm and convenient 1st-floor au pair suite. A wide-open 2nd-floor landing leads to 4 bright bedrooms including the trey-ceiling master with 2 WICS and spa-like marble ensuite. Enjoy a 2000sf LL with rec rm/playrm & office plus 3 fireplaces,a 3-car garage & peek-a-boo views of the Hudson River.