A rare and sophisticated south-facing garden duplex nestled within a historic landmarked mansion on one of Manhattan's most coveted blocks just moments from Central Park. This exquisitely designed residence blends timeless architectural elegance with modern comfort, offering a private garden retreat rarely found in such a prime location. Your welcomed with a gracious foyer and sweeping staircase that leads to an expansive open living and dining room below. Anchored by a Gas-burning fireplace and custom built-in cabinetry, this level is designed for both intimate evenings and elegant entertaining. The sunlit chef's kitchen is outfitted with top-tier appliances and refined finishes befitting a home of this caliber. A powder room, washer/dryer, and an oversized walk-in closet complete this floor. The apartment also comes with a generous storage unit. Just a few steps up from the living room, a stunning glass-enclosed sunroom provides a seamless transition to your private garden oasis and an enchanting setting for outdoor dining and entertaining. The upper level offers a serene primary suite with custom millwork that overlooks the sunroom below, complete with a walk-through dressing area and a spacious marble en-suite bath. A second bright and generously proportioned bedroom and full bath complete this level. Additional features include three-zone central air conditioning, abundant storage throughout, and beautifully finished hardwood floors. Located moments from Madison Avenue's world-class boutiques and dining, this distinguished building permits pieds-à-terre ownership and welcomes dogs. An exceptional opportunity in the heart of Manhattan. Flip tax paid by Buyer.