Nagata Kōsenjō

Nagata Kōsenjō—Nagata Mineral Spring Station—is a mineral water dispensing facility at the Shin-Funakoya Onsen complex in Miyama City, Fukuoka Prefecture, where iron-bearing cold mineral spring water (kosen) of bicarbonate and carbonated character is available for purchase as a drinking water of recognized character, the spring's ferruginous mineral content making its water particularly sought after for internal consumption in the kampo and balneological tradition that values iron-bearing spring water. Unlike a standard bathing facility, Nagata Kōsenjō functions as a mineral water station where visitors carry away the spring water for home drinking—a tradition that reflects the Japanese understanding of thermal spring culture as extending beyond the bathhouse to encompass mineral water consumed internally. The facility's position at Shin-Funakoya Onsen in Fukuoka's Chikugo region connects this drinking spring tradition to one of Kyushu's most distinguished inland mineral spring landscapes.