Occupying the entire 19th floor, the Penthouse at 109 East 79th Street offers an exceptional 5,561 square feet of living space with five bedrooms, a formal dining room, library, five ensuite bathrooms, and a powder room. Designed by Steven Harris Architects, this unique penthouse features 334 square feet of private outdoor space, soaring 10-foot ceilings, and expansive 360-degree views of the city. The design blends prewar elegance with modern sophistication, incorporating floor-to-ceiling casement-style windows and wide, rift-cut American white oak flooring in a chevron pattern throughout. Upon entering through a private, keyed vestibule with St. Clair marble flooring and bespoke rift-cut European white oak paneling, you are greeted by a grand entry gallery. The spacious entertaining wing includes a formal dining room, a large Great Room with a gas fireplace and a south-facing balcony, and an adjacent library with a south-facing terrace offering sweeping views over 79th Street, Midtown Manhattan, and Central Park. The expansive eat-in kitchen is a chefs dream, featuring hand-painted custom Italian cabinetry with polished nickel trim, honed Imperial Danby marble countertops, and a custom stainless steel island with a Nordic Gray marble top. High-end appliances include a 60-inch Wolf 6-burner range, wall oven, speed oven, fully-vented range hood, two Sub-Zero refrigerators with integrated freezer drawers, a full-height wine refrigerator, two Miele dishwashers, and two stainless steel undermount sinks with InSinkErator disposal and Dornbracht faucets. The private bedroom wing offers tranquil views to the north and east over gardens and landmarked townhouses. The sun-drenched primary suite features two oversized walk-in closets, a windowed dressing room, and a spa-like primary bath with Olympic Danby stone walls and floors, a double vanity with a stone slab countertop, a freestanding Da Vinci soaking tub, an oversized steam shower, and a separate Duravit water closet. Secondary bedrooms are spacious and each includes ensuite baths finished in luxurious Nestos Grey stone, with custom floating vanities and either frameless ribbed glass stall showers or Kaldewei Puro undermount tubs with Nestos Grey tub decks. The elegant powder room showcases a floating vanity with honed Maya quartzite slab countertop, an integrated custom sink, matching door surrounds, and Dornbracht platinum-finish fittings. Additional features include pre-wiring for home automation (Sonos), pre-wired shade pockets in every room, individually zoned VRF heating and cooling, and a discreet service entrance. The oversized laundry room, located in the bedroom wing, is equipped with a sink, high-capacity LG washer and dryer, and exterior venting. White-Glove Amenities at 109 East 79th Street This boutique condominium offers 31 residences and a white-glove living experience. The buildings impressive double-height lobby is attended by a doorperson and concierge 24 hours a day. Residents enjoy a lounge, library, and private viewing garden with a cascading fountain. A state-of-the-art fitness center features an international squash/sports court with a retractable basketball hoop and yoga studio overlooking the garden. Additional amenities include a spa with treatment rooms, sauna, and hair salon, as well as a screening room, golf simulator, and game room. Separate storage is available for purchase.