This “mansion in the sky” enjoys 2,000 square feet of spectacular terraces overlooking Park Avenue along with 6,000 square feet of magnificent interiors in this enormous mint-condition duplex in a premier full-service condominium building. Enter by a private elevator landing to an impressive gallery which leads to a grand corner living room with a fireplace and French doors opening onto the terraces. Immediately adjacent is a large and elegant formal dining room, and a handsome billiards room/library. There is an enormous eat-in kitchen with top of the line appliances, and adjoining the chef's kitchen is a spacious breakfast room with French doors opening onto the terraces. The first floor also offers a powder room, dry bar and wine storage, a laundry room, and a bedroom and full bath, perfect for staff or guests. A dramatic and beautiful custom-designed wrought-iron staircase sweeps up to the second floor, where there are five bedrooms, all with en suite bathrooms, including an enormous master bedroom suite with a luxuriously-scaled bathroom and large dressing room. One of the bedrooms is currently an exquisite home office with red lacquer walls and bookcases. A dramatic home theater/media room completes the second floor of this immense duplex. This elegant duplex is flooded with sun, and has open city views in multiple directions from its advantageous corner exposures. The apartment is characterized by distinguished architectural details, beautiful hardwood floors, and high ceilings. There is ample closet and storage space throughout the apartment. Included in this offering is a separate studio apartment on the third floor, perfect for staff or guests or as a private home office, and there is also included an individual wine storage unit. 515 Park Avenue is one of Manhattan's most desirable condominiums, and is perfectly positioned on the corner of Park Avenue and 60th Street.