Welcome to 617 Mountain Road, an extraordinary mid-century modern estate set on 159 acres with panoramic views that will leave you breathless. Designed by acclaimed New England architect Henry B. Hoover, this 5800 SF residence is a private sanctuary commanding sweeping vistas of Mount Monadnocks dramatic peak, the rolling hills of Vermont, and many peaks in Massachusetts. Built in the 1950s, the home reflects understated elegance and intentional design. Hoover, known for his collaboration with landscape architect Fletcher Steele, blended structure and site with remarkable sensitivity, exemplifying the best of regional modernism-timeless, livable, and deeply connected to nature. Inside, floor-to-ceiling glass floods the rooms with natural light and perfectly frames the mountain views. Six spacious bedrooms and five baths accompany expansive gathering spaces, a chefs kitchen, and seamless indoor-outdoor flow. The layout invites both quiet retreat and effortless entertaining. Resort-style amenities include a serene pool, tennis court, elevated view deck, and miles of private trails for hiking and skiing. The walk-out lower level features a gym or bonus room and a climate-controlled wine cellar. An attached two-car garage completes the property. Tucked away in complete seclusion, this once-in-a-generation estate offers limitless possibilities as a private residence, retreat compound, or luxury rental. Experience New England at its most magnificent.