Perched atop one of the most distinguished Park Avenue cooperatives, with two splendid terraces and gracious proportions, this rarely available two-bedroom duplex penthouse showcases the timeless sophistication and classic design that is the hallmark of renowned pre-war architect J.E.R. Carpenter. The entry level features an elegant entrance foyer with a sweeping staircase to the second floor as a centerpiece. The large primary bedroom enjoys open northern exposures, a walk-in closet and en suite full marble bath with rain shower. The second bedroom, currently configured as a library, features beautiful custom shelving, a walk-in closet and en suite full bath. Accessible from both the foyer and kitchen, the expansive dining room can accommodate large-scale, formal entertaining and enjoys wonderful southern light and views. The renovated, windowed eat-in kitchen is bright and spacious, with banquette seating, Subzero refrigerator, Wolf range and oven, and Miele washer/dryer. The grand living room on the second level is a stunning showpiece of dramatic scale and exquisite design, with high ceilings, herringbone wood floors, wood-burning fireplace, elegant powder room and concealed dry bar. The north and south walls are lined with windows. French doors lead to two spacious terraces, each with striking features such as a stone balustrade, wood pergola, and planting boxes to accommodate blooming trees, greens and abundant flowers. 812 Park Avenue, J.E.R Carpenter's award-winning masterpiece, is a premier, full-service pre-war cooperative built in 1927. The building features a beautiful planted garden courtyard, state-of-the-art fitness center and private storage. Pets and 30% financing are allowed, and there is a 2 percent flip tax payable by purchaser. Summer work rules apply.