7. Heiwajima Onsen Kurhaus

Heiwajima Onsen Kurhaus
Inside Heiwajima Onsen Kurhaus (©Heiwajima Onsen Kurhaus)
The Keihin Kyuko Line brings you to Heiwajima station, where you'll find this fully outfitted spa. The facility is split into men's and women's sections, and there are 12 different kinds of bath to choose from. Especially popular among these is the roten-buro using seawater drawn up from the nearby depths of the Pacific Ocean. (Open 10:00 A.M. to 8:00 A.M.; 1,700 yen for adults [1,900 yen on weekends and holidays], 800 yen for children.)

http://www.ll-heiwajima.com/kur/top.html (site is Japanese only)