Nestled in the tranquil fields of the Bridgehampton countryside, this unique offering boasts nearly 22-acres of Hamptons real estate overlooking Atlantic Golf Club. The first two parcels in this package, which are currently being used as a polo field, comprise over 19.5 acres of pristine agricultural reserve with a building envelope of more than 1.97 acres that can be used for agricultural or equestrian structures. The third lot is nearly 1.65 acres, abuts the expansive reserve, and has been improved with a custom Jay Bialsky home. Accessible from a quiet enclave of prestigious estates, the circular stone driveway leads to both a detached garage and an attached heated garage. Once inside, this magnificent residence offers around 13,000 sq. ft. of clubhouse-like living space enhanced by architectural stone accents and character grade white oak flooring. The interior is warm, inviting, and comfortable with exceptional open living spaces and walls of windows to capitalize on the pastoral setting. The main level features a grand foyer, living room, great room, library with wet bar, family room, dining room, two half baths, gourmet kitchen with stainless steel island and high-end appliances, breakfast area that opens to the back terrace, laundry room, and two bedrooms with ensuite bathrooms. Located on the second floor, the master bedroom has panoramic windows overlooking the agricultural reserve. The attached master bathroom offers his/hers sinks, a makeup station, a soaking tub, and a large shower. Three additional bedrooms with ensuite bathrooms, a sitting room with an ensuite bathroom, and a laundry room are located on the second level. There is also an office with half bathroom and multi-person sauna as well. The finished lower level provides a gymnastics area, golf simulator, fitness studio, billiards room, wine cellar, media room, painting area, full bathroom with steam, and a half bathroom. The house is equipped with a generator, motorized shades, Crestron home automation, Lutron wireless lighting, Gemini security, Sonos sound, and more. Additionally, the heating and air conditioning system has no less than 16 zones, automatic humidifiers, and HEPA air filtration. Other interior amenities include six fireplaces, cathedral ceilings, luxury finishes, custom windows, and high-grade hardware. The residential property is extensively landscaped and includes roughly 6,000 sq. ft. of gracious exterior living space. Extending off the breakfast area and family room of the main level is a beautiful sun-drenched terrace that overlooks the reserve and has a Viking grill. A private, hedge-lined patio also on the south side of the house offers a heated gunite pool with built-in wet bench and spa, a pool house with a full bathroom, and an outdoor shower. The grounds also benefit from a separate guest cottage with kitchenette and full bathroom. This wonderful Hamptons compound is truly one-of-a-kind.