the most substantive real estate in the world is the kind that is difficult to impossible to replicate: this pristine, private, full-floor penthouse soaring atop tribeca's limestone-clad, robert a.m. stern-designed four seasons tower is one of those collector-quality homes. a security-enabled elevator whisks you to the private arrival gallery that leads to the entry of penthouse 81: immediately you are astounded by the absolutely breathtaking, open sweeping views of the manhattan skyline. twelve-foot-tall ceilings throughout afford equally impressive views and light in all four directions, north, south, east, and west. to the west is the expansive living room - focused on a splendid gas fireplace with a magnificently carved marble mantle - that leads to the west-facing sunset terrace, one of two, substantive terraces. adjacent to this grand entertaining room is a formal dining room. the adjoining south-west corner eat-in eggersman designed kitchen is enormous and has been expertly outfitted with extensive custom eggersman cabinetry with a full suite of gaggenau appliances, perfect for entertaining on a grand scale. at the opposite end of the apartment, a beautiful study/library/media room with another gas fireplace affords a more intimate setting for day-to-day comfort. the primary bedroom suite embraces almost the entire east side of the floor comprising a large bedroom, two walk-in closets, a midnight kitchen, and two en suite bathrooms, exquisitely appointed with custom millwork and the finest fixtures, marble slabs, and all bathed in mesmerizing natural light through large windows that frame iconic views. the entire suite leads out onto the second, sunrise terrace that faces east overlooking the iconic woolworth tower all the way to the brooklyn bridge and beyond. a service hallway connects you to the secondary bedroom wing with two large bedroom suites featuring equally impressive light and views and substantive closet space. rift-cut quarter-sawn oak floors further fuel the exquisite decor that permeates throughout this home that has been appointed to absolute perfection. highly sophisticated hvac, lighting, and av/home automation systems feature throughout. a powder room and laundry room are additional attributes. while the penthouse in itself is extraordinary, it is further bolstered by the incomparable services by legendary four seasons hotels and resorts. the 38th floor is devoted to amenities for the exclusive use of residents including a large fitness center and yoga studio, a private dining room, conservatory, and lounge with access to outdoor loggias terraces, a roto designed playroom, and a screening room. the residences begin on the 39th floor: residents also enjoy direct access to the hotel amenities including a spa and salon, a 75-foot swimming pool, attended parking garage, restaurant, bar and lounge, ballroom facilities, and meeting rooms as well as a comprehensive suite of a la carte services. the unparalleled quality of service and security further enhance this penthouse. a property that combines incomparable quality standards of a top-notch customized home and building rarely becomes available: to find one of this scale - all on one floor, without stairs - is almost impossible.