Set high on the top two floors of 139 East 63rd Street, this spectacular penthouse duplex is wrapped in terraces and lives like a private home in the sky. Two bedrooms, two and a half baths, soaring ceilings, oversized rooms, and four incredible private terraces create a one-of-a-kind residence that is rarely found on the Upper East Side. Every major room opens to outdoor space, bringing in beautiful natural light and creating an effortless connection between indoor and outdoor living. Designed for both everyday living and entertaining, the layout offers a dramatic living room, a formal dining room, a spacious eat-in kitchen, and a butler's pantry that makes hosting a breeze. A full-size washer and dryer add convenience, while the separation between the entertaining level and the private bedroom floor provides the perfect balance of comfort and privacy. Oversized windows flood the home with sunlight throughout the day, highlighting the impressive ceiling heights and generous proportions. Whether you're enjoying your morning coffee, dining outside, gardening, or simply taking in the skyline, each of the four private terraces offers its own unique escape above the city. Located on one of the Upper East Side's most desirable tree-lined blocks, you're just moments from Central Park, Madison Avenue shopping, world-class restaurants, museums, and everything that makes this neighborhood one of Manhattan's most coveted places to live. Homes like this rarely become available. Combining the feel of a townhouse with the ease, security, and views of a penthouse, this is an extraordinary opportunity for the buyer who values space, exceptional outdoor living, and timeless New York elegance. Two storage bins transfer with this sale. Pets permitted.