*A Sky-High Sanctuary on the East River Perched high above the 86th Street corridor, this sprawling 4,000+ square foot residence defines the concept of an indoor-outdoor oasis. A distinct entry gallery, framed by floating concrete walls, sets a tone of artistic grandeur, flowing seamlessly into a voluminous dining and living expanse. Wrapped in oversized windows, these entertaining spaces offer sweeping East River and city views, capable of hosting grand-scale events or transforming into intimate settings via fluted glass pocket doors. The seamless flow extends outward to a 30-foot terrace, the first of three outdoor spaces. The culinary wing is a study in form and function, featuring a professional-grade stainless steel kitchen, a sun-drenched **greenhouse** breakfast nook, and a massive butler s pantry with laundry. Private quarters are thoughtfully separated into two wings. The flexible layout currently offers four bedrooms (convertible to five) and a dedicated office. The primary suite is a true retreat, boasting a private south-facing terrace, a spa-inspired bath with a Jacuzzi, and extensive closet space. 510 East 86th Street is a premier full-service cooperative situated at the quiet nexus of convenience and recreation. Just moments from the lush landscapes of Carl Schurz Park, residents enjoy immediate access to the East River Promenade, cycling paths, dog runs, and athletic courts. The building offers a bike room, central laundry, and common storage, while the location ensures effortless travel via the FDR and rapid access to LaGuardia. This pet-friendly home is surrounded by top-tier schools and dining, and notably, a private storage available to rent. The property is a short distance away from some of the Upper East Side's best public and private schools, including Chapin and Brearley*