This grand and sprawling 8 into 7 room home (either 3 bedrooms or 2 bedrooms with a library) with 3 full baths and two staff rooms is now available for the first time in nearly fifty years. There is a long, dramatic central gallery, ideally suited both for art and entertaining. Off a private hallway are both the master and second bedrooms, each of which have their own en-suite baths and large walk-in closets. The third bedroom, or library, is entered from the gallery and features a dry bar, and all the bedrooms/library have oversized windows facing East. The expansive living and dining rooms flow as a contiguous space, and the dining room is flanked by two decorative, non-structural columns demarcating it from the living room. From the dining room one looks West across an expanse of townhouses and architecturally pleasing buildings to a glimpse of Central Park, rare for a dining room exposure. The living room is anchored by a wood-burning fireplace surmounted by an antique French oak mantle, and features two windows facing East over Park Avenue with townhouse, ecclesiastical, high-rise, and skyline views. The functional butler's pantry flows into the adjacent, spacious kitchen which has a large window with views similar to the dining room's. There is a washer and dryer enclosed in a large kitchen closet. Off of the kitchen and pantry are two West-facing staff rooms. 11B shares an elevator landing foyer with just one other apartment, and a large basement storage unit conveys with the sale. Conceived originally as a cooperative, 580 Park Avenue is a circa 1923 J.R. Carpenter masterpiece commanding the entire Park Avenue frontage between 63rd and 64th Streets on the West side. There are 14 floors, 60 apartments, and no adjoining buildings. The impressive two-level lobby is anchored by gleaming marble floors and is crowned by intricately detailed coffered ceilings. There are full-time doormen and elevator attendants, as well as a full-time, live-in Super. 580 Park Avenue, two blocks from Central Park and just one block away from Madison Avenue's enticing shops and restaurants, is a pet-friendly building. For decades, apartment 11B has been a home, housed a noted private art collection, and has been a vibrant gathering spot.  It now awaits its next interpretation. No Summer work rules requirement.  Photos have been digitally staged for illustrative purposes. Co-exclusive. 3% Flip Tax paid by the buyer.