Unzen Onsen & Hell Springs
A volcano-top hot spring resort surrounded by 30 active sulfur vents known as Unzen Jigoku (Hells). The town sits inside Unzen-Amakusa National Park with dramatic hiking trails above the clouds.
2–4 hours or overnight
Free (hell springs boardwalk); onsen bath from ¥500
Hell springs: always accessible (boardwalk); onsen facilities: varies by facility; Unzen Spa House: 9:00–21:00
June (azalea season) or October–November (autumn)
Bus from Nagasaki or Shimabara (~1.5 hrs)
Location
Why Visit
- 1
Walk the free Jigoku (Hells) boardwalk at dusk when steam glows orange in the last light
- 2
Climb Heisei Shinzan — a peak that rose 1994 after volcanic activity — for extraordinary views
- 3
Buy Unzen onsen tamago (hot spring eggs) cooked in the vents at the trailhead stalls
Local Tips
The steam vents and boiling sulphur pools of the Unzen Jigoku (Unzen Hell) are eerie and dramatic — the site where 26 Christians were martyred in 1627 by being thrown into the boiling springs adds historical weight. The onsen water is highly sulphurous — excellent for skin. The surrounding Shimabara Peninsula scenery (Mt Unzen, Ariake Sea) is excellent. Combine with Shimabara Castle and Nagasaki for a full peninsula day.
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