Arima Onsen lies in a wooded valley behind Mount Rokko, barely half an hour from central Kobe yet feeling like a mountain village. It is one of Japan’s three most ancient hot springs, mentioned in eighth-century chronicles and patronised by emperors and by the warlord Toyotomi Hideyoshi, and it is famous for two entirely different waters rising side by side: kinsen, the ‘gold water’, heavily iron-rich and salty, which oxidises to a rust-brown on contact with air, and ginsen, the clear ‘silver water’ carrying carbonate and radium. Narrow sloping lanes, old ryokan and two public bathhouses make it Kansai’s easiest classic onsen trip.
🗓️ At a Glance
| Location | Kita Ward, Kobe |
| Hours | Public baths ~9:00–22:00 |
| Admission | Public baths ~¥800; ryokan day-use varies |
| Time needed | Half day, or overnight |
| Best time | Year-round; autumn colour in November |
What to Do
- Bathe in the rust-red iron-rich kinsen (gold water).
- Compare it with the clear carbonated ginsen (silver water).
- The two public bathhouses, Kin-no-yu and Gin-no-yu.
- Sloping lanes of old ryokan, shops and steam vents.
Combine Your Visit
- Combine with the Mount Rokko ropeway and summit views.
- Pair with Kobe Harborland in the city below.
- Read our Hyogo overview .
Getting There
- By subway + railway: Kobe subway to Tanigami, then Shintetsu to Arima Onsen — around 30 minutes from Sannomiya.
- By ropeway: over Mount Rokko from the Kobe side, scenic but slower.
Tips
You can visit as a day trip without staying over: the two public bathhouses let you try both waters for a modest fee, and many ryokan sell day-use bathing. Bring an old towel or dark swimwear-free mindset — the gold water stains fabric a rust colour permanently — and note it is strongly saline, so rinse and drink water after bathing.
