Set on four acres of waterfront land once part of the 100-acre Masury Estate known as Beaurivage ("Beautiful Shore"), 34 Old Neck Road South in Center Moriches honors the history of its surroundings while embracing contemporary design and building practices. Reached by a private allee of mature linden trees, the approach itself is a statement, a quiet and dramatic introduction to the 2020 Lindal-designed residence beyond. The ground level entry foyer provides access to the garage and generous storage areas before leading upstairs to the primary living level of the home. There, soaring ceilings and expansive floor-to-ceiling windows define the great room, creating a seamless connection to the landscape and a sense of being fully immersed in the property throughout the seasons. The spacious eat-in kitchen, complete with pantry and adjacent laundry room, balances everyday functionality with thoughtful design. Whether preparing a simple meal or hosting a larger gathering, the layout supports both ease and efficiency. A fireplace anchors the main living space, while a second fireplace in the screened-in porch extends the living experience outdoors, offering a comfortable setting to enjoy fresh air and river breezes well into the cooler months. Just off the living room and kitchen, a den provides additional flexible space for entertaining or relaxing. Two guest bedrooms, each with en suite baths, offer privacy and separation from the main living areas. Occupying the top floor, the primary suite serves as a private retreat with its own en suite bath and walk-in closet. A Juliet balcony creates a treehouse-like vantage point overlooking the grounds and the Forge River beyond. A loft open to the great room offers additional flexibility, ideal for a home office, reading lounge, or secondary sitting area. Outdoors, the heated saltwater pool and covered cabana enhance summer living and entertaining. A winding path leads from the backyard to the shoreline of the Forge River, providing direct access to the water and a peaceful setting for reflection. Built to be FEMA compliant, and engineered to meet current floodplain standards, this home offers both peace of mind and long-term resilience in this waterfront setting. Solar panels further enhance efficiency, reducing operating costs while supporting a more sustainable way of living. Center Moriches has long been appreciated as a waterfront destination, once home to a collection of bayfront hotels that drew visitors seeking a seasonal escape. Today, this property offers the opportunity to continue that tradition as either a refined year-round residence or a private seasonal retreat.