Perched on the 15th floor of 605 Park Avenue, this expansive combined residence offers exceptional scale, flexibility, and the ease of full-service Park Avenue living. Currently configured as a spacious three-bedroom, four-bathroom home, the layout can easily be returned to four bedrooms if desired. A gracious entry gallery leads to an oversized living room with impressive proportions, centered around a decorative fireplace and complemented by a custom-built bar finished in antique glass. Just off the main living space, a banquet-sized dining area creates a comfortable yet refined setting for everyday living and entertaining alike. A separate library, tucked behind concealed pocket doors, adds architectural interest and versatility. Whether used as a den, media room, or restored to a fourth bedroom, the space adapts easily to changing needs. The windowed kitchen is thoughtfully appointed with a Viking range, Sub-Zero refrigerator/freezer, and a separate Sub-Zero wine refrigerator. An in-unit washer and dryer - a rare convenience in Park Avenue cooperatives - adds a practical touch. The private bedroom wing is well separated from the entertaining spaces. The primary suite includes a substantial walk-in closet that can double as a discreet home office or dressing room. Its five-fixture bath features a soaking tub, separate walk-in shower, and generous proportions. Each additional bedroom has its own en-suite bath, offering comfort and privacy for family or guests. Built in 1954 and designed by architect Sylvan Bien, 605 Park Avenue is a well-regarded 105-unit postwar cooperative known for its attentive white-glove service. Residents enjoy a full-time doorman, live-in resident manager, private parking garage, fitness center, landscaped garden and entertaining deck, bike storage, and additional storage options. Pet-friendly and meticulously maintained, the building remains one of Park Avenue's most established full-service addresses.