This spectacular residence is designed by one of the most celebrated architects of our time, Robert A.M. Stern. Residence 3A, with three bedrooms, three full bathrooms and a powder room, seamlessly incorporates modern finishes with traditional prewar elegance. The entry opens into an octagonal formal gallery that leads into an oversized living and dining room complete with 11 foot ceilings and enormous East facing windows. Off the living room is an adjacent sunlit room great as a wonderful family room off the kitchen, or can be used as formal dining. Off the gallery is situated a handsome powder room fitted with Grigio Carnico marble vanity and floors, Toto water closet and Lefroy Brooks hardware, all of which were hand selected by Mr. Stern. White Appalachian herringbone oak floors with a walnut stain graciously adorn all the public spaces, including the dining room. The chef's kitchen boasts custom shaker inspired millwork cabinetry, natural Brazilian quartzite countertops, Lefroy Brooks hardware, Gaggenau appliances and a center island. The master bedroom serves as a quiet reprieve, completely set apart from the secondary bedrooms, with northern exposure and a luxurious walk in closet complete with a dressing table. The en suite marble master bathroom is pure sophistication with its custom designed double sink vanity and Wi Fi enabled heated flooring. Two additional bedrooms offer western exposure as well as en suite white marble bathrooms. This beautiful home enjoys custom casings and base moldings throughout. This magnificent home is accompanied with a private wine vault in the cellar to hold 115 bottles of your favorite wine. 20 East End Avenue is located in the heart of the Upper East Side near Carl Schurz and John Jay Park as well as many excellent restaurants, markets, and schools. The building has many wonderful amenities including a 24-hour concierge, graciously-appointed library, billiards room with Christofle outfitted bar and cordial lockers to store your favorite liquors, game room, private dining room, fitness center and spa, playroom, bicycle storage and a gated port cochere.