Located in one of Park Avenue's most distinctive prewar cooperatives, this magnificent corner 16-room duplex apartment is certain to impress.   The classic and sophisticated residence has been carefully constructed and masterfully renovated throughout, by internationally-acclaimed Architect, Alan Wanzenberg, incorporating the finest finishes and appointments.  Resplendent with outstanding natural light, the apartment features a graceful layout with grand-scale rooms, pristine hardwood flooring, soaring ceilings and classic moldings.  A private elevator vestibule opens to a 25-foot gallery which lead  to the public rooms of home.  The corner 37-foot living room has large South-facing windows framing picturesque cityscape views, a woodburning fireplace and museum grade gallery lighting.  A set of   French doors leads to a charming planted terrace.  An adjacent library has custom woodworking and a woodburning fireplace with marble mantel.  The 25-foot formal dining room has three double-hung windows facing West and a conservatory.  The Northern wing of the home includes a 24-foot Chef's kitchen has ample room for dining and has been outfitted with custom cabinetry, and top-of-the-line appliances from Viking and Sub-Zero and an adjacent area for wine storage. There are four staff rooms and two full baths situated within this wing of the home.    A graceful staircase leads to the upper level and the private chambers.  The sprawling corner master suite has a fireplace, a luxuriously-appointed master bath, with double-sinks, custom vanity, separate shower and soaking tub.  There is a 25-foot dressing room with custom millwork and ample closets as well as an adjacent study.  Three generous bedrooms, each with a full bath en suite, may be found on this level, along with a family room and a separate laundry room and storage area.  Built by Rosario Candela in 1929, this architectural masterpiece was ultimately converted to a cooperative by John D. Rockefeller Jr. who resided in the building for many years.  This white-glove prewar building offers residents the highest level of service and privacy.