Tucked behind a private gate on nearly 14.5 acres, 45 St. Marks Rivers Edge Drive is a custom Mediterranean-style estate offering the rare combination of acreage, privacy, river access, and old-Florida beauty. This 4-bedroom, or 3-bedroom plus office, residence features three levels, with two formal living levels and a lower level offering covered parking, storage, utility space, and a full bathroom. Thoughtful details in the home include rich cabinetry, extensive woodwork and moldings, tile and real wood flooring throughout, solid wood closet shelving, an elevator shaft, two electric fireplaces, six porches for relaxing, whole-home water filtration system, a reverse osmosis system in the kitchen, and two HVAC units replaced within the last few years. There is a whole-home generator that will keep you comfortable and connected. The grounds are just as impressive, offering established gardens, a powered chicken coop, Generac-powered sheds, four commercial carports, and a beautiful seating area covered in camellia vines - perfect for quiet mornings, evening wine, or entertaining under the greenery. A private boardwalk extends from the home to the St. Marks River. With deep water access approximately three miles from the sea, this property is well-suited for boating, fishing and outdoor enthusiasts. Located in a unique community with approximately 100 acres of conservation space at its center, this rare property blends riverfront living, acreage, privacy, lifestyle flexibility and timeless Old Florida beauty in a truly unforgettable setting, making this unlike anything else on the market.