Extraordinary Waterfront Equestrian Estate on 23+ Private Acres is now available for the first time ever. Come to Upper Marlboro Maryland in the premier bucolic, agrarian area of Prince Georges County and get so much more for your money. Nestled on a private peninsula at the confluence of the Tanyard and Hotchkins tributaries, this remarkable, beautifully landscaped, well-maintained 23+ acre waterfront estate offers an unmatched combination of luxury living, premier equestrian amenities, and exceptional privacy. The custom-built 4-bedroom residence showcases superior-quality finishes throughout, a breezy covered porch, a TimberTech deck overlooking the waterways, a cozy masonry fireplace, spacious living areas, and an attached 24' x 24' two-car garage. The home also features a full walk-out basement encompassing approximately 1,304 square feet, with exterior windows and door access and more than 8 feet of headroom, offering tremendous potential for additional living space, recreation, or storage. Designed for the serious equestrian in mind, the property's impressive horse facilities include a 204' x 70' indoor riding arena featuring a 20m x 60m dressage ring with Pure Coarse Sand footing, four-speaker Bose PA system, ring sprinkler system, 92 linear feet of training mirrors, and spectator seating area. A separate, detached horse barn offering seven 12 X 12, matted stalls with electric outlets for fans or water heaters, hot and cold-water wash rack, tack room, 12’ wide, self-draining center aisle, hay loft, and an adjacent 11' x 24' enclosed horse trailer garage. The barn offers direct access to four fenced, lush grazing fields enclosed with three-board fencing, and also offers an all-weather heavy use pad in the paddock adjacent to the barn to stabilize footing in wet weather. There is also a 12' x 24' run-in shed for your horses' security and comfort. Supporting the farm operation is a detached 20' x 58' five-bay equipment building, a concrete manure structure, a wood shed, and an exceptional four bay 24' x 44' detached two-story garage/workshop complete with a wood stove, providing abundant space for equipment, vehicles, hobbies, or storage. Whether you're seeking a private waterfront retreat, a turnkey equestrian facility, or a legacy property, this rare offering in Land Preservation with low Agricultural Assessment and taxes, delivers an unparalleled lifestyle in a breathtaking natural setting at an amazing price with water, wineries and history at your front door. Appointment only. Cannot be seen from the road. Call today!