Perfectly positioned on the 58th Floor of 520 Park Avenue, the most distinguished boutique condominium on the Upper East Side, this magnificent full-floor penthouse home redefines luxury living. This Upper Simplex Penthouse residence offers breathtaking Central Park, reservoir and city skyline views from every room.The story of this 4,322 square foot home begins at the private key-locked elevator landing, which leads to the vast entrance gallery from which all of the entertaining rooms flow. The expansive dining room features two double-wide doors leading to the 279 square foot balcony. Spanning nearly 42' long, the balcony expands the dining room and kitchen into indoor-outdoor living spaces perched high above the Upper East Side. The dining space leads seamlessly into the impressive corner living room encompassing the North-East corner of the home, featuring breathtaking Central Park and city views. Adjacent to the living room, is the library or third bedroom. These rooms boast incredible views and proportions, offering one-of-a-kind entertaining and living spaces.The impressive windowed eat-in-kitchen, exquisitely outfitted in custom floor-to-ceiling Christopher Peacock cabinetry designed by Robert A.M. Stern, features hand painted cabinets with hand-blown glass. The substantial marble-clad island anchors the kitchen. The first-class appliance package includes a Subzero refrigerator with two freezer drawers, two additional separate refrigeration drawers, a six-burner Wolf range with vented hood, two Miele dishwashers, two Wolf wall ovens, built-in below-cabinet Wolf microwave, and a full-height Sub Zero wine refrigerator.The primary bedroom suite features South and East exposures, offering views of the Empire State Building, Chrysler Building, East River and beyond. The city skyline views are simply dazzling both day and night. Two custom-outfitted walk-in-closets, and a luxurious windowed master bathroom with Victoria Albert free-standing bathtub, separate steam shower, radiant heat flooring, beautiful marble slabs, polished nickel fixtures, and Robert A.M. Stern custom-designed double vanity. The second bedroom suite features beautiful southern views, an abundance of closet space, and an en suite marble bathroom with radiant heat flooring. The in-unit laundry is located in the common hallway, featuring an Electrolux washer and vented dryer.The residence features approximately 15 foot ceilings paired with oversized windows, including bay windows in the primary bedroom and corner living room. Key features include select-cut solid white oak hardwood flooring in classic herringbone and overlay patterns, custom crown molding, multi-zone central air conditioning and heating with precise temperature control in every room.520 Park Avenue is a breathtaking limestone condominium designed by Robert A.M. Stern. Rising from a discrete mansion facade, 520 Park Avenue is just shy of 800 feet and houses thirty-five full-floor simplex and duplex residences, offering truly white-glove service to its residents. Amenities include a full-time doorman and concierge, a salon which leads to a beautifully landscaped garden, fully-equipped fitness center, double height indoor swimming pool, pilates studio, a Club room equipped to serve as office space, screening room, lounge, and more. 520 Park Avenue is located at 60th Street between Park and Madison Avenues - an ideal location between the charming Upper East Side Historic District and the prestigious Plaza District. Storage unit available for purchase separately.