Welcome to an extraordinary waterfront estate on prestigious Mississagua Lake, part of the renowned Catchacoma-Mississagua seven-lake system. Nestled in a sheltered bay and boasting 543 feet of waterfront, this remarkable family retreat was thoughtfully designed to accommodate generations of family and friends. The sprawling main cottage features 12 bedrooms and 7.5 bathrooms, with multiple private wings providing comfort and privacy. At its heart is a spectacular open-concept living, dining, and kitchen area highlighted by soaring pine ceilings, walls of windows, and a floor-to-ceiling stone fireplace. Additional gathering spaces include a sunroom with fireplace, upper loft overlooking the great room, dedicated office, and walkout entertainment room with bar and lounge area. The private primary wing features a spacious lakeside bedroom with a double-sided fireplace shared with an elegant sitting room overlooking the water. The suite is complemented by an ensuite, private balcony, and a sauna within the wing. Additional guest wings offer private hallways, bathrooms, and balconies. Beyond the main residence, guests will enjoy a separate 2-bedroom guest retreat featuring cathedral pine ceilings, living room, full bathroom, private deck, and its own firepit area. The dedicated recreation lodge offers a stone fireplace, projector lounge, and recreation room. Outdoor living is equally impressive with expansive decks, outdoor kitchen, hot tub, lakeside firepit, basketball court, and extensive parking. At the shoreline, a floating two-bay boathouse with mechanical lifts is topped by an expansive rooftop deck. Located minutes from a marina and offering access to the renowned Catchacoma-Mississagua seven-lake system, this exceptional property presents a rare opportunity to own a true Mississagua Lake legacy estate designed for unforgettable gatherings and generations of enjoyment.