Immaculate Park Avenue Penthouse with 360-degree landmark views. A private elevator entrance leads directly into this graciously proportioned full-floor penthouse, located in Park Avenue's premiere pre-war condominium. Spanning 4,205 Square Feet, PH27 boasts four bedrooms, five and a half baths, and open views in all directions. A formal entrance gallery leads to the 45-foot wide living room with a fireplace, adjoining wet bar and formal dining room, and three exposures overlooking the full expanse of Park Avenue. Adjacent to the dining room is a top-of-the-line windowed chef's kitchen and separate windowed breakfast nook with a custom built-in banquette. The primary suite occupies an entire private wing of this penthouse, including a graciously proportioned bedroom featuring a fireplace and three exposures with stunning Central Park and Park Avenue views, two windowed baths, and 7 closets including two walk-ins. Three additional graciously proportioned bedrooms with en-suite baths are tucked away in their own separate wing of the apartment. Every detail is impeccably curated with top-of-the-line finishes throughout such as solid oak herringbone floors, striking coffered ceilings with recessed lighting, custom moldings, handcrafted Italian brass doorknobs, Fior de Pesco marble baths with bowed white wood cabinetry and Watermark chrome-nickel fixtures.. Additional special features include extensive custom closets, a windowed powder room, a large laundry room with a washer/dryer, multi-zone central air, motorized shades, and Savant smart home system throughout. 502 Park Avenue is the Upper East Side's preeminent white-glove condominium. The 32-story building, designed by Goldner and Goldner in 1929 and originally named the Viceroy Hotel, later became the famed Hotel Delmonico. The hotel played host to bold-faced names including Bob Dylan and The Beatles, and long-term residents included Lucille Ball and Ed Sullivan. White-glove hotel-style services and amenities include 24-hour doorman and concierge, attentive full-time maintenance and security staff, housekeeping laundry services, live-in resident manager, and state-of-the-art fitness center. Special assessment of $2,317 per month through October 2025.