Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Kamaishi Restpia Onsen is situated in Kamaishi City on the Iwate coast, a former steel city of profound industrial heritage — the site where Hashimoto Hanzaemon built Japan's first modern Western-style blast furnace in 1858 using imported technology to launch the Meiji-era industrial transformation — and a city that achieved global sporting fame when its Rugby World Cup 2019 miracle win transformed a rust-belt community in recovery from 2011 tsunami devastation into an unlikely stage for one of sport's most celebrated upset victories. The match between Ireland and Japan at Kamaishi Recovery Memorial Stadium, built on land cleared of tsunami debris, became a globally televised symbol of the city's phoenix-like rebirth and the power of sport to heal community trauma. The thermal waters here offer relaxation in a city of extraordinary industrial history and contemporary human-interest story, where the warmth of the spring mirrors the warmth of a community that has faced catastrophic loss and chosen regeneration.