This stunning 5,256-square foot, 5-bedroom, 5.5-bath duplex residence with 808 square feet of private outdoor space graces the signature south-facing prow of 10 Sullivan Street, where curved walls of oversized windows offer exceptional southern light and reveal breathtaking Downtown and Uptown panoramas. On the main level, beyond the private elevator vestibule, a gracious entry foyer leads to a formal central gallery, ideal for showcasing art, and then to the magnificent double-height great room where three walls of floor-to-ceiling windows offer dramatic, open Downtown views, bathing the grand 43' space in brilliant light. The sprawling Poliform windowed chef's kitchen with dual entrances and center island breakfast bar is appointed exquisitely with handsome walnut cabinetry and Lagano marble slab countertops and backsplash, with top appliances by Sub-Zero, Miele, and Viking. Completing this level are a windowed library; two bedrooms, each with windowed en-suite baths; laundry room with side-by-side washer and dryer; powder room; and the 404-square foot private balcony with spectacular skyline views. The upper level, also with direct elevator access and a private entry vestibule, is entered through a central gallery leading to the private master suite. Its graciously proportioned bedroom is lined with east-facing windows, complete with motorized window shades, and includes two generous walk-in closets and a spa-like master bath. Elegantly clad in Dolomite white marble, this master bath features a Macassar Ebony Poliform double vanity with Lefroy Brooks fixtures, freestanding soaking tub, separate steam shower, private water closet, and radiant heat flooring. Two additional bedrooms each feature windowed en-suite baths. An upper 404-square foot private balcony with sweeping city views completes this level. Modern conveniences abound, including a Savant home automation system and motorized window shades and radiant heat flooring throughout. A sumptuous palette includes oil-rubbed Danish oak floors and oversized industrial-style windows, distinctive interior finishes inspired by SoHo's rich aesthetic heritage.