Step back in time at Takegawara Onsen, a true symbol of Beppu with its stunning, traditional wooden architecture dating back to the Meiji era. This isn't just any hot spring; you're here for the famous sand bath, a unique experience where you'll be cozily buried in naturally heated volcanic sand. It's an incredibly relaxing and detoxifying experience that you won't find just anywhere. After your 15-minute sand session, you can rinse off and enjoy a soak in the classic, piping-hot onsen baths, beloved by locals for generations.