Discover the perfect blend of modern sophistication and relaxed waterfront living in this extraordinary riverfront estate set on over 4 pristine acres with more than 300 feet of frontage on the Lake Chapin section of the St. Joseph River. This custom-designed residence offers over 5,500 square feet of exceptional living space, plus a beautifully appointed 700+ square foot guest studio apartment. The striking transitional architecture was thoughtfully designed to maximize breathtaking river views, with Fernwood Botanical Garden directly across the water providing stunning, unobstructed natural scenery year-round. Inside, an expansive open floor plan creates effortless flow for both everyday living and entertaining. The chef's kitchen features premium finishes throughout, including quartz countertops, a Wolf range, Sub-Zero refrigerator, and Miele dishwasher, along with an impressive butler's pantry complete with commercial refrigerator/freezer and a second Miele dishwasher. An adjoining coffee and beverage bar connects seamlessly to the sunroom and expansive upper patio. Additional main-level highlights include multiple gathering spaces, a spacious dining area, private office, and light-filled sunroom. The finished walk-out lower level adds incredible flexibility with two additional bedrooms, 1.5 baths, kitchenette with wine cellar, gym, infrared sauna, and a large recreation room--ideal for guests, extended family, or entertaining. Outdoor living is equally remarkable, featuring more than 1,500 square feet of bluestone patio space with sweeping river views, a luxury pergola with adjustable louvered roof, quartz heaters and ceiling fans, hot tub, firepit, and beautifully terraced landscaping leading to the permanent pier. The 40+ foot pier includes a large boat lift, floating dock, and adjustable jet-ski lift. Great care was taken to preserve the property's unique terraced wetlands through a multi-year conservation effort coordinated with the Michigan Department of Environmental Quality and Fish & Wildlife agencies, helping protect the natural beauty and wildlife habitat along the riverbank. The lush, park-like setting offers exceptional privacy while remaining highly functional. Additional amenities include an attached 3-car garage with interior dog kennel and built-in wash station, plus a detached 3-car garage with half bath and a private studio apartment above featuring a full bath and kitchenette--perfect for guests, hobbies, or additional workspace. The property is also equipped with a whole-home Generac generator and owned 1,000-gallon buried propane tank for added peace of mind. Located in Buchanan, less than 100 miles from Chicago and close to golf courses, wineries, South Bend, and Notre Dame, this one-of-a-kind property offers a rare opportunity to enjoy luxury waterfront living with boating, fishing, and nature right outside your door. A truly exceptional home that must be experienced in person to fully appreciate the craftsmanship, setting, and lifestyle it provides.