Welcome to a once-in-a-lifetime opportunity to own an exceptional equestrian estate sprawling over 206 unrestricted acres in the heart of Millbrook hunt country. Originally built in 1865, and meticulously expanded with a no-expense-spared addition that spans over 6000 sq ft. This estate seamlessly blends antique charm with modern opulence. This prestigious property boasts miles of meticulously fenced pastures, enchanting riding trails, serene ponds, and breathtaking panoramic vistas of the majestic Catskill Mountains. Originally owned by Margaret Carnegie, only child of Andrew Carnegie, this extraordinary estate offers a piece of history and an unparalleled lifestyle. The main residence features a large paneled library, a sprawling living room flooded with natural light from windows on three sides, and soaring high ceilings that exude grandeur at every turn. The elevator grants effortless access to both the primary suite and the finished basement, while two staircases offer passage to different wings of the home. One staircase leads to two bedrooms with two baths, ensuring privacy and comfort for guests or family members. The second staircase ascends to an expansive primary ensuite, providing a lavish retreat with unparalleled luxury. Another bedroom with ensuite completes the upper level. Designed by renowned French architect, Atelier Choiseul, the exceptional stable is a masterpiece of craftsmanship and design. Impeccably appointed, the equestrian facilities include stables, paddocks, a feed room, tack room, run-in sheds, a luxurious lounge, hayloft, and staff apartments, providing everything needed for the discerning equestrian enthusiast. The property also features a professionally designed hunter trial course, offering endless opportunities for outdoor recreation and enjoyment. Experience the tranquility of country living while still being just minutes away from the charming Village, Metro-North station, and a convenient 90-minute commute to Manhattan. Indulge in the prestigious Millbrook Hunt, exhilarating Mashomack Polo, and the finest hunting and fishing experiences at Orvis Sandanona. Don't miss your chance to embrace the epitome of luxury country living in one of the most coveted locations in the Hudson Valley.