Located on one of Manhattan's most prestigious blocks, this extraordinary 22-foot-wide Neo-Grec brownstone seamlessly blends timeless architectural detail with modern luxury. Spanning six levels and approximately 9,000 square feet, the residence offers six spacious bedrooms, six full bathrooms, and three elegant powder rooms. A true rarity in the city, the home features three private outdoor spaces-including two expansive terraces and a beautiful garden-providing a tranquil escape and exceptional opportunities for indoor-outdoor living. Originally built in 1885 by renowned architect Richard Buckley, the home showcases the highest quality finishes and a thoughtful layout that separates grand entertaining areas from the private living quarters. Entering a spacious and elegant foyer with a fireplace and custom built-in bookshelves, you are met with the grand, skylit staircase that winds up through this incredible home. Opening onto a lovely, enclosed garden, the enormous eat-in chef's kitchen boasts a suite of top-of-the-line appliances by Wolf, Miele and Sub-Zero, quartz countertops, ample cabinetry, and a walk-in pantry. Ascending the winding steel and wood staircase, the parlor floor unfolds before you. The impressive great room overlooks the treetops of 73rd Street and boasts ceiling heights up to 11.5 feet, as well as a gas fireplace. The formal dining room overlooks the garden with a Juliet balcony and accesses the kitchen via a flight of back stairs. A wet bar and powder room lie between the rooms on the parlor landing. Occupying the entire third floor, the palatial primary suite embodies absolute luxury. The north-facing bedroom features a fireplace and a large, custom-built dressing room. The windowed ensuite bathroom featuring a second fireplace, opens onto another terrace, and boasts a soaking tub with brass Waterworks fixtures, a separate WC and separate vanities. Two guest suites, each identical, with full ensuite bathrooms and dressing rooms occupy the fourth floor, while three more bedrooms and two full bathrooms take up the fifth floor. A full laundry room is located on the fourth floor for ease and convenience. The top floor is a penthouse-style atrium that is currently used as a media/games room. It opens onto a beautiful south-facing terrace, and features a wet bar and powder room. The lower level has another full laundry room, a home gym, a full bathroom with a steam shower, as well as ample storage space. Thoughtful infrastructure touches and amenities include an independent generator, a water filtration system, full soundproofing throughout, individually controlled HVAC in each room, and a built-in sound system.