Introducing Pierce Peak, an extraordinary estate set on 31+ acres of private mountaintop where the Hudson Valley meets the Berkshires. Designed by acclaimed architects Burr & McCallum, the 6,000-plus-square-foot residence crowns Cunningham Hill, commanding 360-degree views across the New York and Massachusetts countryside. A dramatic 300-foot roofline stretches across the landscape, interrupted only by an infinity-edge pool that appears to merge with the horizon. Inside the main residence, walls of glass fill the open-concept interior with natural light while framing the surrounding mountains and countryside from nearly every room. The great room and screened three-season porch each feature dramatic cathedral ceilings defined by substantial exposed timber beams and fireplaces. The main residence includes a gourmet kitchen and pantry and two primary suites, while the guest house offers two additional bedrooms. Together, the estate offers four bedrooms and three full and three half baths. A dedicated fitness center and pool house complete the living and recreational spaces. Geothermal heating and cooling complement the home's thoughtful design, while a covered courtyard leads to the garage discreetly integrated beneath the residence. Beyond the residence, the estate unfolds into a complete equestrian setting with an impressive covered riding arena, a five-stall barn with tack room, fenced paddocks, and open pasture. Ideally positioned between the Hudson Valley and Berkshires, Pierce Peak is approximately eight minutes from Queechy Lake, 13 minutes from West Stockbridge, and 20 minutes from Chatham, placing celebrated dining, shopping, culture, and outdoor recreation within effortless reach.