Welcome to Duplex Penthouse Residence 3601 - a one-of-a-kind, custom-built, two-story private penthouse soaring above River North. Rising sky-high with dramatic twenty-six foot ceilings and sweeping one hundred eighty city views, this iconic residence blends art, architectural innovation, and modern luxury into a truly monumental home in the heart of downtown Chicago. Designed for an ultra-luxury lifestyle, the interior offers an awe-inspiring sense of scale and sophistication. The grand living room features a twenty-six foot brick stone fireplace, an exquisite crystal chandelier framed in premium wrought iron, and seamless indoor-outdoor flow to two private terraces-perfect for elevated entertaining. The gourmet chef's kitchen is impeccably appointed with soft-touch natural wood cabinetry, Macauba quartzite countertops, a mosaic backsplash, and professional-grade appliances including a five-burner gas range, hood, and integrated dishwasher. The kitchen opens to an oversized terrace, creating a luxurious indoor/outdoor culinary experience. Three spacious bedrooms include a show-stopping primary suite with a custom dressing room featuring tailor-made cabinetry, soft-touch lighting, specialty bag and shoe displays, Italian finishes, and glass hardware. The second level continues the luxury with a beautifully designed spa bathroom and custom built-out closets. The lower level is a private retreat offering a massive entertainment lounge with a state-of-the-art ventless gas fireplace and a bespoke full bar crafted with Italian flooring, quartzite countertops, soft-touch lighting, and dual built-in refrigerators (wine and cooler). Smart-home features include a Sonos surround system, Nest digital climate controls, and motorized remote window shades for the soaring great-room windows. Residents enjoy fifty thousand square feet of Plaza-hotel-style amenity experience including twenty-four hour door staff; fitness center; running track; outdoor pool; sundeck grills; basketball court; sauna; steam room; dog run; billiards; media room; party room; library; dry cleaning service; and package room. Assessments include all utilities except electric. Centrally located in vibrant River North steps from parks galleries world-class dining shopping and transportation-Penthouse 3601 is the epitome of Chicago luxury living.