A rare opportunity to own an equestrian estate in the heart of Millbrook hunt country on 206 unrestricted acres offering miles of fenced pastures and riding trails, picturesque ponds and panoramic views of the Catskills. For the first time in 40 years, this phenomenal country manor, once the property of Andrew Carnegies only child Margaret, is offered in move-in condition with the updated 6000 SF 1860s main home having state-of-the-art systems installed, and a truly extraordinary stable by French architects Atelier Choiseul. The equestrian facility includes stables, paddocks, feed room, tack room, run-in sheds, lounge, hayloft, plus staff apartments/housing, equipment storage. Property also encompasses professional hunter trial course. ?Once in a lifetime offering to live the quiet-luxury country life, enjoying the Millbrook Hunt, Mashomack Polo and hunting and fishing at Orvis Sandanona. Minutes to Millbrook Village shops, restaurants and renowned Millbrook Vineyard. All only 90 minutes to Manhattan.Known as the low-key, quiet-luxury community, Millbrook is where full- and part-time residents alike live the genuine country life. With Barbour jackets, Wellie boots and 4 x 4 vehicles the favored look, they enjoy the Millbrook Hunt, Mashomack Polo and hunting and fishing at Orvis Sandanona and Tamarack Preserve. Outstanding private schools abound in this area. Imagine being at the heart of this and calling Hallmark Farm home? For the first time in 40 years, this phenomenal equestrian estate, once the property of Andrew Carnegies only child Margaret, is offered in move-in condition with the updated 1860s main home having state-of-the-art systems installed, and a truly extraordinary stable by French architects Atelier Choiseul. The Millbrook Hunt gallops across this very land.Sited on 206 secluded and completely unrestricted acres with ever-changing views of the Catskills, the estates vast acreage includes an apple orchard, pond, multiple trails, including a one-mile loop designed by landscape architect A.E Bye, and a hunter trial course designed by local equestrian legend Tom Duggan. Adding to the postcard-perfect scene are miles of pristine post-and-rail fencing and cultivated fields, ideal for healthy horse foraging.The embellished interiors of Hallmark Farms signature stable are paneled with beautiful European beech, American oak and white pine. The stable includes ten 12 x 12 stalls with traditional wrought iron partitions, feed room, tack room, lounge with full bath and wet-bar, and a hayloft with 12.5 ton capacity. In addition, there are 2 apartments to accommodate farm managers and grooms, and a 3-bay garage, one with a truck and tractor lift. There are multiple fastidiously maintained paddocks varying in size from 6 to 12 acres, some shaded and 4 with run-in sheds.Completely renovated and expanded in 2003, the 4 bedroom/4.5 bathroom main house features wide board pine floors, reclaimed from trees cleared on the property. The generous and gracious entrance hall leads to the dramatic living room with 20 ft. coffered ceilings, wood burning fireplace and transom-topped French doors facing south, west and north. No surprise the current owners host up to 85 guests for cocktails. A chefs kitchen spills into a bright and charming breakfast room that faces east for the morning sun. Additionally, a formal dining room with fireplace and French doors, a paneled library with fireplace, office, and powder room round out the first floor.This blue-ribbon equestrian estate with unrivaled provenance, minutes from Millbrook Village with its shops, restaurants and renowned Millbrook Vineyards, offers the ultimate luxuries for you and your family: privacy, size and security. Minutes to Metro-North station and 90 minutes to Manhattan.