Kitsuregawa is a historic castle town and prospered as a post station on the Edo road. The Onsen is located along the rivers running through the town. The light-brown, salty, slightly alkaline water is one of the best in quality containing the three key elements of hot spring water: sulphur, salt and iron. Accessible in about 30 minutes from Utsunomiya, the prefectural capital, this is a popular Onsen for a day visit. You can also stop by the nation’s first roadside station with Onsen facilities inside.