Situated in a stately 25-foot limestone mansion, this sun-filled duplex combines historic architecture with modern elegance in one of Manhattans most distinguished locationsjust off Fifth Avenue, a stones throw from Central Park and the Metropolitan Museum of Art. The residence opens to an expansive wood-paneled Living/Dining Room with ceilings nearly 11 feet high and tranquil views over the tree-lined block. At its center, a sweeping 20-foot staircase creates a striking focal point and a natural flow between the two levels. Adjoining the entertaining space is a custom chefs Kitchen and a south-facing Library or Guest Bedroom with a marble en-suite Bath. The private lower floor offers two spacious Bedrooms, each with marble Baths, which can remain separate or be reimagined as a gracious Primary Suite. A private entrance and an additional full Bath enhance the flexibility of this level. The interiors are finished with thoughtful craftsmanship: bespoke millwork, elegant stonework, hardwood flooring, and through-wall climate control. Washer/dryer installation is permitted with board approval. This boutique eight-unit cooperative is exceptionally well cared for, with recent capital improvements including a new elevator (2021), a $600,000 roof replacement (2023), refreshed lobby and hallways, and basement storage. Located on East 80th Street, this residence is perfectly positioned in the heart of the Upper East Side, just off Fifth Avenue. Central Park and the Metropolitan Museum of Art are only moments away, with The Frick Collection and other cultural landmarks nearby. Madison Avenues renowned boutiques, galleries, and haute couture houses are within easy reach, along with the citys finest private schools, celebrated restaurants, and charming cafs.