Located within a full service boutique pre-war condominium, this exceptional 12 room penthouse residence is uniquely complemented by 3 magnificent landscaped terraces. The private elevator landing leads to a gracious entrance gallery, a grand double sized living room (31 x 16) with soaring 10 coffered ceilings, hardwood herringbone floors, and a limestone gas-burning fireplace, a stately formal dining room, a distinguished wood paneled library. The dazzling, sun flooded gourmet eat-in-chefs kitchen is appointed with copious bespoke cabinetry detailed with elegant copper finishes, granite countertops, Ann Sacks tiled backsplash, 6 burner La Cornue gas range and hood, Subzero refrigerator, and 2 Bosch dishwashers is a chefs dream come true! Nestled by the kitchen and separated by pocket doors the cheerful family room is ideal for casual gatherings. Also on this floor resides two large bedrooms each with ensuite (beautifully renovated) bathrooms, a charming childrens library/playroom, and all enjoy big blue skied open city views. Ascend to the upper floor vestibule and behold a masterfully landscaped (48 x 17.5) terrace that offers glorious California-styled outdoor living! The first of three terraces has an inviting living room area with gas fireplace, and larger separate dining area and an extraordinary outdoor kitchen with a built-in Wolf gas grill. A unique amenity, discreetly located around the corner of this terrace, is a 6 person built-in hot tub that enjoys wonderful southern open sky and city views. Also on this upper level, a generously sized primary bedroom suite has its own seductively private terrace, side by side spa-like bathrooms with radiant heated floors, a sauna, and separate study or home office and a large walk-in closet, the fourth bedroom with ensuite bath, and a lovely second study (or second home office) with enchanting western views onto the terrace and open sky beyond. The uppermost floor has a home theatre and the most spectacular Zen-like, fully landscaped terrace large enough to comfortably host small gatherings or larger scaled entertaining or if need be, a board meeting or two! Important architectural details include: 360 degrees open blue sky views, approximately 7,200 SF interior and 3,000 SF exterior, soaring 10 coffered ceilings, 2 gas-burning fireplaces with 18th century limestone mantels, hardwood herringbone floors throughout, mahogany bay windows, commanding mahogany pocket doors, multi-zone central air conditioning, nickel finishes in the bathrooms, top of the line sound system, irrigation system on all terraces, laundry room, pin-drop quiet, sun-flooded, triple A location in proximity to Central Park, world-class cultural institutions and art galleries, schools, nearby fine dining and Madison Avenues most exquisite signature boutiques. Full service white gloved boutique condominium located on a prime block of the Upper East Side has a well appointed fitness center, additional storage, an attentive full staff that includes full-time doorman, porters and live-in superintendent. Whether looking downtown, uptown, east or west, this one-of-a-kind trophy property radiates star quality and will steal your heart! Showings 9am-4pm M-F, excluding holidays and weekends.