Dogo Onsen is Ehime's most famous hot spring district, just east of central Matsuyama. The Dogo Onsen Honkan is the landmark: a many-tiered wooden bathhouse where the act of bathing feels ceremonial rather than merely practical.
The surrounding arcade is touristy but fun, with snacks, ryokan, souvenir shops, and evening visitors wandering in yukata. Go early or late to avoid the thickest crowds, and check which baths are open during restoration work.