Japanese Onsen & Sauna Guide
All Articles
Explore our full library of guides on Japanese onsen and sauna culture, covering knowledge, enjoyment, etiquette, and history.
AllBasic Knowledge and IntroductionThe Appeal of Japan's Hot Springs and SaunasHealth & BenefitsSpring Quality & ScienceThematic GuidesTips for a Successful Trip
207 articles in total
Spring Quality & Science
Iron-Rich Hot Springs: Reddish-Brown Causes & Safety
Discover iron-rich hot springs: why they turn reddish-brown, scent and appearance, how they differ from drinking springs, and bathing precautions for beginners.
Dec 24, 2025
Spring Quality & Science
Acidic Hot Springs: pH Guide, Sensation & Safety Tips
Confused by acidic hot springs? Learn pH basics, why they sting, volcanic origins, who should avoid them, quick safety tips, and notable acidic onsen.
Dec 24, 2025
