Arima Onsen 有馬温泉

Arima Onsen is a hot spring resort in Kobe, Japan, situated near Mount Rokkō. It is one of Japan's oldest hot springs, with mentions in documents dating back to the 8th century AD. The resort features two types of springs: kinsen, which is a yellow-brown iron and salt water, and ginsen, a colorless water containing radium and carbonate.

Source: en.wikipedia.org ↗, read 2026-09-10