Welcome to Apartment 9E at 555 Park Avenue, a grand-scale, corner classic 8-room residence located in a premier white-glove cooperative on the Upper East Side's Gold Coast. Situated on a high floor with four exposures, this sun-filled home features three corner rooms-living room, library, and primary bedroom-with oversized windows that capture abundant natural light and offer open city views from nearly every room. This elegant prewar apartment showcases timeless architectural details including coffered ceilings, pristine moldings, decorative built-ins, hardwood floors, pocket doors, and a wood-burning fireplace. With nearly 11-foot ceilings and an impressive layout, the residence seamlessly blends classic charm with modern comfort. Currently configured with two bedrooms and four full bathrooms, the flexible layout can easily accommodate up to four bedrooms. The spacious home office (formerly two staff rooms) includes built-in shelving and an en-suite bathroom, offering ideal space for remote work, guest accommodations or a private bedroom suite.   The expansive layout features a grand entry gallery with a private elevator landing, opening into a 40-foot formal entertaining expanse with side-by-side living and dining rooms and a stunning corner library. The enormous eat-in kitchen is ideal for everyday living and entertaining, equipped with a Viking 6-burner range, Thermador double wall ovens, a full-size Sub-Zero wine fridge, and an adjacent butler's pantry with additional Sub-Zero under-counter fridge, sink, and dishwasher.   The residents wing offers privacy with two well-proportioned bedrooms and three full bathrooms. The elegant primary suite features a wall of built-in closets, a dressing room, and a luxurious en-suite bath with a Jacuzzi tub. The second bedroom shares a Jack and Jill bathroom with the corner library, while also enjoying access to a private full bath. Additional features include: Washer and dryer in unit, through-wall A/C, and abundant closet space and storage   Built in 1914 by renowned architects George & Edward Blum, 555 Park Avenue is an exclusive, full-service prewar co-op with only 25 apartments across 12 floors. Residents enjoy 24-hour doorman and concierge service, a live-in resident manager, fitness center, bicycle storage, and private storage. Pets are welcome. Located in the heart of the Upper East Side, moments from Central Park, Madison Avenue shopping, and top-tier education and restaurants, this exceptional home combines elegance, space, and location in one of Manhattan's most coveted buildings. 50% financing. Flip Tax:  3% paid by buyer