Occupying the entire 21st floor of a boutique full-service condominium, this exceptional residence offers over 3,700 square feet of thoughtfully designed living space with panoramic exposures in every direction. Sweeping views of the East River, Carl Schurz Park, the Manhattan skyline and open western vistas provide a stunning backdrop throughout the home. A gracious entry foyer leads to grand entertaining spaces. The living room, centered around a wood-burning fireplace, is bathed in natural light and flows seamlessly into a formal dining room, creating an ideal setting for both everyday living and entertaining. A separate library offers additional flexibility and can easily function as a fifth bedroom, media room or home office. The well-proportioned layout includes five bedrooms and four-and-a-half bathrooms, with each bedroom enjoying its own distinct view. The oversized primary suite features a generous walk-in closet and a windowed stone bathroom with dual vanities. A temperature-controlled wine room with storage for more than 900 bottles is a rare amenity for serious collectors. Designed by renowned architect Costas Kondylis, 90 East End Avenue is an intimate 22-story condominium with just 38 residences. Building amenities include a 24-hour doorman, fitness center, children's playroom, private storage and live-in resident manager. Positioned directly across from Carl Schurz Park and moments from the East River Promenade, Asphalt Green, The Chapin School and The Brearley School, the building offers a unique combination of tranquility, open views and convenient access to the best of the Upper East Side. The real estate taxes reflect a 17.5% reduction under the Primary Residence Condominium Abatement. Purchasers are advised to consult a tax professional to determine eligibility. Please note, some images have been virtually staged.