Perched high above Park Avenue at the apex of Carnegie Hill, this sophisticated 10 into 9 room prewar gem, elegantly rethought, offers gracious living on the Upper East Side. Sun-drenched, the 12th Floor corner residence has soaring 10' 6" ceilings, glamorous living space, stunning original detail and open views in every direction. The large, square entry foyer leads to a beautifully proportioned living room with wood-burning fireplace, oversized windows, stunning hardwood floors, and captivating western exposures overlooking the bell tower of Brick Church. Another elegant sitting room or library connects to a stunning corner dining room that boasts a sweeping double exposure west and north with open views up Park Avenue. A large gallery with custom bookcases and skylight leads to the oversized chef's kitchen, featuring high-end stainless-steel appliances, custom Bulthaup cabinetry, a separate pantry, a large center island, and a separate breakfast dining area with built-in banquette. The primary suite is a true retreat (originally 2 rooms) with a wall of windows plus sitting area, two full, renovated bathrooms on opposite sides of the room, a custom dressing area, and two walk-in closets. Three additional large bedrooms, two with ensuite baths and enormous closets, plus an additional playroom/home office and hall bath complete the home. There is a separate laundry room with ample storage. Centrally air conditioned throughout. The apartment transfers with two storage bins. 1155 Park Avenue is a pet-friendly, full-service luxury cooperative building built in 1915 by Bing and Bing, with 24-hour doorman, live-in super, gym, bike room, and laundry room. 40% financing. 2.5% flip tax.