Perched above a lush, wooded hillside just moments from the coveted shores of Long Beach, this one-of-a-kind retreat offers the ultimate in privacy, serenity, and elevated living. Aptly named The Long Beach Treehouse, this multi-level architectural gem rises into the treetops, blending luxury with nature in a truly magical setting. Spanning three spacious levels, this distinctive residence features 3 bedrooms, 3.5 bathrooms, a den/office, an expansive living room, and a big recreational room all thoughtfully arranged for comfort, flow, and flexibility. Expansive windows invite natural light throughout, while multiple outdoor decks provide peaceful, tree-lined vantage points. The exterior boasts a true resort-style setup, with a heated gunite pool, plunge pool, waterfall feature, and spa hot tub. The surrounding deck and pool area has been meticulously designed for luxurious poolside entertainment, offering an ideal backdrop for relaxing or hosting with ease. Inside, the home offers gracious living and dining spaces on every level, finished with care and maintained to high standards. Timeless design meets modern comfort in a setting that feels both elevated and inviting. Situated just minutes from Sag Harbor Village, with access to fine dining, shopping, and the calm waters of Long Beach Bay, this home presents a rare opportunity to own a character-rich property in one of the Hamptons' most desirable locations.