This 30 foot wide red brick Neo-Georgian mansion is ideally situated on one of the UES's most charming and architecturally significant townhouse blocks. The grandly scaled interiors are complemented by renowned architect Peter Marinos extraordinary taste and superb craftsmanship.    Once inside, an elegant marble Gallery, with an impressive staircase greets you and is serviced by a gracious Powder and large Coat Closet, along with other storage that is artfully concealed behind custom doors. On this level there is also one of two Kitchens. There is also a huge and square 35' deep south facing Garden surrounded by neighboring gardens, thereby creating a verdant and unexpected oasis.    Upstairs, marvelous ceiling heights and superb proportions define the Parlor Floor which boasts a 30' wide grand Living Room with 4 window bays and a wood-burning fireplace, enhanced by a spectacular Adam period marble mantle. Across the landing, a formal Dining Room, also replete with a fireplace, is similarly distinguished by 4 tall bay windows all overlooking the superb landscaped Garden. Thoughtfully and conveniently positioned between these two rooms, is a marble clad Serving Kitchen which efficiently works in tandem with the main Kitchen.    The 3rd floor Master Bedroom Suite includes a Bedroom that opens to a Sitting Room as well as a Dressing Room with a luxurious marble Bath. Across the wide hallway landing, there is a handsome wood paneled Library with fireplace. The 4th floor is currently comprised of 3 large Bedrooms and 2 Baths. Completing impeccably conceived layout, the spacious windowed basement offers a walk in cedar closet, a gym, extensive storage space and a half Bath.    Both impressive in size and architecturally significant, this house is ideal for sophisticated living. Moreover, a buyer is offered an extraordinary opportunity to acquire one of the most lovely and optimally situated mansion townhouses in New York.