A Napier Simpson Jr. masterpiece on 40 private acres in Mono. This architect-designed country estate combines exceptional craftsmanship with natural surroundings. The main residence offers approximately 5,171 sqft (incl LL) of finished living space, featuring large windows that provide expansive views of the property and abundant natural light. The newly renovated kitchen, anchored by a custom walnut island, connects seamlessly with the dining room and screened-in porch, offering multiple inviting areas to dine and entertain. The sunken living room with a stone fireplace serves as a warm focal point. A main-floor bedroom with an ensuite provides flexibility for guests or multi-generational living. The upper level includes a primary suite with a fireplace, double walk-in closets, and a renovated ensuite with a standalone tub and an adjacent office. A second bedroom with an ensuite completes this level. The walk-out lower level includes a media room, office, bedroom, bathroom, sauna, and storage. Exterior features include a spring-fed pond, tennis court, four-stall barn with paddocks, a one-bedroom coach house, and a three-car garage. Minutes from Orangeville and under 90 minutes to Toronto.