This 12-room prewar corner apartment radiates grand-scale classic elegance. A private elevator leads to the large marble entryway. Entertain guests in the long living room, which features a decorative fireplace and opens to both a large formal dining room and a library, all with 11-foot coffered ceilings. The four en-suite bedrooms include a corner light-filled master suite, with spacious custom closets and large bath with a deep soaking tub. At the center of this home is an eat-in kitchen with a marble-topped island, Sub-Zero refrigerator, Viking range and two Miele dishwashers, bookended by a traditional butler's pantry and breakfast nook. A full laundry room and staff room with a full bath sit off the kitchen. The apartment features oversize windows and views of Park Avenue's tulip beds. It has been renovated with central air and is wired for sound.Designed by George and Edward Blum, this desirable, pet-friendly building offers all the amenities one would expect of an exclusive Park Avenue address, including a resident superintendent, concierge, full-time doorman, gym, a bike room, courtyard garden and private storage in the basement.