This sun-drenched, luxurious 4-bedroom duplex penthouse offers four exposures and sweeping views! It is located in a prewar condominium on Madison Avenue, across from the Carlyle and Mark Hotels. In need of some TLC, it presents a rare opportunity to customize a truly exceptional home. The upper level features an ample living/dining room with beautiful views West, South and North, a wood-burning fireplace, herringbone floors, arched as well as greenhouse windows, and a south-facing terrace, perfect for al fresco dining with stunning skyline views. A North-facing big balcony overlooks The Carlyle. The eat-in kitchen, with greenhouse windows over the dining area, offers spectacular views. The dining room, which can be converted into a bedroom, has an ensuite bathroom. A powder room completes this floor. The spacious primary bedroom features corner windows with Central Park views, an ensuite bathroom with double sinks, a soaking tub, shower, a dressing area, and a custom-made closet. The large adjoining library with custom shelving and a closet can easily be used as a bedroom. The third bedroom, with a cedar closet, shares a renovated bathroom with the library. This approximately 2,440-square-foot charming penthouse offers an opportunity to restore a luxurious home while preserving its prewar elegance. The building has a 24 hour doorman and is located in one of the most coveted areas of the Upper East Side for dining, shopping, galleries and transportation, close to the Metropolitan Museum and 1 block from the entrance to Central Park. A true gem! Photos have been virtually staged.