Kotori no Yu in Nagano City Hosts Limited-Time "Chilled Onsen" Event This Summer
Kotori no Yu, a day-use hot spring in Matsushiro, Nagano City, is running a limited-time "Chilled Onsen" event from July 3 to July 26, 2026, offering three bath zones at different temperatures — including a naturally cool open-air bath using raw spring water — so guests can enjoy the mineral-rich waters comfortably even in the peak of summer.