first offer---this rare prewar 14-room penthouse triplex overlooks the east river from baronial-sized rooms that total over an estimated 5,000 square feet. the penthouse is surrounded by 2 landscaped wraparound terraces that total over an estimated 2,500 square feet. this stately residence has served as the home of ireland's ambassador to the united nations since 1957. the co-op includes 6 bedrooms, a formal dining room, library, a den, an office, 2 kitchens, a breakfast room, 2 fireplaces, 4 bathrooms and 2 powder rooms. the primary suite has a dressing room---all overlooking the water. the penthouse offers a grand entertaining space with 10-foot ceilings and tranquil water views. the unit has great style and architectural bones.