A floating cedar Finnish sauna moored on the Ottawa River beside the NCC River House, opening in October 2026. The sauna runs at 85 to 95°C, and the cold plunge is the river itself: an enclosed river plunge plus open-water access. Sessions last 90 minutes and are mixed and clothed, so swimsuits are worn; there are changerooms and a lounge but no showers. Single sessions cost $45, and the whole sauna can be booked privately. Open daily 7am to 10pm.