Introducing Penthouse ONE at the world-renowned 400 Park Avenue South. It is now being offered for resale for the first time since construction. Boasting spectacular 360-degree views of New York City this absolutely unique, full-floor residence with private outdoor space is located on the top floor of the striking glass high-rise tower designed by Christian de Portzamparc. This exquisite penthouse is a 4,020 sq.ft. residence with 11 ft. ceilings comprised of a spacious living room, a private exterior terrace of additional 1,000 sq. ft., five bedrooms, five and a half bathrooms. This fairy tale of a home is nestled on the top floor of this Five-Star luxury condominium that offers a top-notch security with 24 hours staff, concierge and porters. The living room is perfectly sized to accommodate large, boisterous parties or quiet family gatherings. It then opens into the beautifully designed kitchen and connects all areas of the residence. The master bedroom suite is tucked away in a separate wing of the apartment and features mesmerizing views of Midtown and East River, It also has two marble bathrooms and four closets. The three other bedrooms are all airy span the Southern side of the property. Each bedroom features unobstructed City and water views, plenty of closets and en suite bathrooms. The remaining fourth bedroom can easily become a library or as a secondary living room room, or even a formal dining. The 1,000 square foot terrace rests atop clouds and offer breathtaking views, creating an additional outdoor space to be uniquely enjoyed. The residence has two entrances, allowing an additional access to the bedrooms without passing through the main living room. There is also a separate laundry room (with a washer and dryer) and an additional pantry room next to the kitchen and the secondary entrance. The apartment features high-end finishes, oak floors, high ceilings, floor-to-ceiling windows, ample closet space, and marble bathrooms. The kitchen features custom-designed Pedini glass-faced cabinetry, quartzite countertops, and Miele appliances. There are marble countertops and heated limestone floors in the bathrooms. This five-star, full-service condominium offers unparalleled service to its residents: 24-hour doorman and concierge, and very attentive staff. The residence of the condominium can also enjoy its swimming pool, sauna, steam room, fitness center, virtual golf, spinning studio, yoga room, screening room, private storage, lounge and beautifully landscaped 27th-floor terrace.