Unzen offers bathers a host of sulfurous options and some cool walkways through the jigoku
(unbatheable 'hells'), where steam hisses up through cracks in the earth and pools of scalding mud blurp with the consistency of hot paint.
The Shimabara peninsula is a bit remote, so plan on a long bus ride from Nagasaki City if you want to reach the onsen. Once there you'll have a bunch of spots to choose from, many of them fancy hotels with all the trimmings. If you're on a budget, don't overlook the public baths, which are inexpensive and just as good. The water's hot, odoriferous, and refreshing.
Recommend an Onsen!
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