Ashigawa Keikoku Onsen
A large bathing area that lavishly uses Ashigawa Keikoku Onsen, which naturally gushes from a fault line 1500 meters underground to the surface. This calcium-sodium sulfate hot spring is alkaline, and its colorless, clear water feels pleasant on the skin and is said to be beneficial for cuts and improving circulation. In addition to the spacious large bath, the open-air area offers a weekly rotating selection of utaseyu and a high-concentration carbonated spring, with men and women alternating access.