Rich in scale, history and presentation, this prewar duplex penthouse in the Gold Coast is in a real estate echelon all its own. Perched atop the luxe co-op residences at 1500 N. Lake Shore Dr., encompassing the entire 24th and 25th floors overlooking Lake Michigan, this spectacular residence boasts 8,000 sq ft of interior living space and 5,000 sq ft of private outdoor space, including a massive, east-facing terrace with a lawn, manicured gardens, a Roman fountain, and fabulous city and lake views. The building itself is a Chicago institution. Built in 1927 and designed by New York architect Rosario Candela with Chicago firm McNally & Quinn, the building has been home to many prominent Chicago families over the years. The penthouse, however, was built especially for the building's original owner, and has rarely changed hands in the last century. World-class, artisan details like stained glass windows, stone friezes, hand-carved wood doors, and original bronze hardware are found throughout, beginning with a private entry foyer that connects to a 39'-long, walnut-paneled gallery hall with vaulted, hand-frescoed ceilings. The living and entertaining footprint on the main level features a formal dining room, a showpiece living room, a handsome bar/lounge, two offices, a modern chef's kitchen, and three amazing terraces. The living room stuns with 20'-high, coffered ceilings, and a stone fireplace, and affords access to both the yard and the north terrace. The kitchen flaunts custom cabinetry, professional grade appliances, a marble-topped island and counters, and an informal dining area. Four of the home's bedrooms currently live on the main level as well, each with its own unique footprint and architectural details. There's also a spacious, lake-facing room with its own private patio with lounge and fire pit, two generous closets, and a custom, marble-clad en-suite bath that could serve as a stunning primary suite or an epic family room. The home's original limestone staircases have been beautifully preserved, and lead to the second level via three access points. Here, a sixth en-suite bedroom, a sauna room, and more flexible space reside. Plus, there's a partial third floor with a game room/bar and additional storage spaces. White-glove building amenities include a full-time door staff, an on-site manager, and a live-in engineer. This property includes two valet parking spaces and pets are welcome. With pedigree and proximity to Lincoln Park, the lakefront, and the best of Chicago's first-class dining and shopping, the penthouse at 1500 N. Lake Shore Dr. is uncompromising, luxury living at its finest.