Also often called Yangming Villa, is an historical building built by former President Chiang Kai-shek for receiving foreign dignitaries.
© OpenStreetMap contributors
Nude, men and women in separate buildings. Make sure to bring your own soap and wash cloth. The rules insist that you much pre-wash before entering the smallish 40°C tub, and the attendees will insist too. Not many foreigners find this place, so if one, be ready to intimately meet the locals.