This extraordinary light filled duplex condominium, comprised of two full floors plus a private rooftop terrace, must be seen to be fully appreciated.  Upon entering directly from the elevator, one is struck immediately by the sheer drama and scale of the nearly 5000 square foot space designed by O'Brian Muehleisen Architecture Studio; with 11ft.  to  13 ft. ceilings, floor to ceiling windows on all four sides, stunning open views from Central Park to  the East River  and arresting architectural details.  The top floor features a loft like great room,  formal dining area, home office, powder room, master bedroom wing with luxurious master bath and his and hers walk in closets. Additionally there is an expansive  open eat in kitchen with everything a serious cook could desire such as white lacquer cabinets with steel edged drawers and doors, Wolf stove and oven, Subzero refrigerator and wine cooler and a Miele dishwasher  and dumb waiter to the roof above  all opening into the  adjacent  family room. The fully outfitted terrace is accessed by the spiral stair which corkscrews within a barrel of vertical white oak boards beneath an operable oculus skylight above.  A dramatic angled glass stair enclosure connects the two interior floors and is composed of thin steel members and low iron glass and extends 24 feet from the floor of the lower level to the ceiling of the upper level.  The lower floor is comprised of an open playroom/rec room, den with powder room, 4 bedrooms with three baths en suite and an additional full bath as well as a full laundry room.  There is an elegant planted 650 sq. ft. terrace on the roof with a built in sink, grill and an electric dumbwaiter servicing the kitchen for seamless entertaining and dining al fresco. This small full service, luxury boutique condominium features, 24 hour doorman and concierge, a private gym, playroom, a resident's lounge with kitchen and terrace, central laundry, bicycle storage and a refrigerated package delivery room.