A rare opportunity to own a stunning four-bedroom, three-and-a-half-bathroom penthouse duplex perfectly located between Madison and Park Avenues on one of the Upper East Side's most desired blocks. Located steps away from Manhattan's major cultural landmarks, renowned art galleries, high-end retail stores, fine dining, and Central Park, this home offers the perfect live-in accommodation, pied-a-terre, or investment opportunity for discerning buyers. This approximately 2,442 square feet true penthouse is flooded with sunlight thanks to its unobstructed 360 degrees South, West, North, and East exposures and greenhouse windows. The landing level offers a sprawling master bedroom with wide, oversized windows boasting double exposure with unobstructed city views. Adjacent to the master bedroom is an enormous walk-in closet with a windowed dressing area and a five-piece ensuite bathroom. The very generous second bedroom is currently set up as an office/library with custom-made wood built-ins. The third bedroom also counts a large walk-in closet. The breathtaking upper level counts a large living room with a wood-burning fireplace and herringbone wood floors throughout. Surrounded by stylish arched windows with unobstructed views, the floor offers a copious amount of northern, western, and southern light. The beautiful windowed eat-in kitchen has a dual oven, a dishwasher, and a Sub-Zero refrigerator. A large balcony faces the landmarked Carlyle Hotel to the North and a planted terrace with outdoor furniture faces South. A fourth bedroom can be built off the stairs to the right and an ensuite bathroom is already in place. To the left, a powder room is available for guests. A Creston sound system will liven up your apartment with state-of-the-art sound quality. 30 East 76th Street is a Pre-War building built in 1928 and converted to condominiums in 1985. This boutique building only counts 16 apartments and has a 24-hour doorman.