Welcome to perhaps the most extraordinary penthouse on the Upper West Side! Located in the iconic, turn-of-the-century Beaux-Arts Dorilton, this legendary penthouse duplex has grand loft-like living spaces, four bedrooms, four and one half beautifully renovated baths plus an enormous, multi-level planted terrace. The vaulted fully-skylighted living room and dining area feature a gas fireplace, beautiful sunlight and views. Off the living room, there's a large formal dining space and an adjacent open state-of-the-art kitchen with breakfast bar. The enormous terrace offers spectacular city views and completes the living area. There are two bedrooms and two and a half baths on the penthouse level. A lovely staircase leads to the lower level containing two additional bedrooms, two baths and a library (or third bedroom) with a fireplace, plus a full second eat-in mint condition kitchen. There are fabulous windows throughout, three sun-filled exposures, central air throughout and it's all in mint pristine condition. The terraces, sunlight and views are simply spectacular. The Dorilton is one of the most sought after, architecturally significant buildings on the Upper West Side. This iconic, prestigious white glove building with a full-time doorman and live-in super is pet friendly, allows 75% financing, and offers a beautifully landscaped roof garden, outdoor courtyard, additional storage in the basement, and a bike room.