Worth a Journey

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The World’s 100 Best Saunas & Baths

Hotel Iyaonsen

Miyoshi, Japan

  1. THE WORLD’S BEST SAUNAS & BATHS WORTH A JOURNEY · 2026 ✦ ✦ N° 52 2026
Hotel Iyaonsen

A cliffside ryokan in the Iya Valley with a free-flowing sulfur spring, reached by narrow mountain roads. A steep cable car descends about five minutes to lukewarm open-air baths beside the river, and an indoor observation bath looks out over the gorge.

Highlights

  • Cable car to riverside bath
  • Lukewarm sulfur spring around 38°C
  • Indoor observation bath with valley view

Good to know

  • No soap or washing at riverside bath
  • Cable car stops running around 8:30 pm
  • No elevator; many stairs

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