Gero Hot Springs (Gero Onsen)
The historic hot spring “Gero Onsen” is said to have been discovered in the Engi era (901-923) and the Tenryaku era (947-957). During the Edo period, a Confucian scholar who served the Tokugawa family, Hayashi Razan, noted the hot spring as one of "the three famous springs in Japan," alongside Arima Onsen in Hyogo Prefecture and Kusatsu Onsen in Gunma Prefecture.
Even Oda Nobunaga loved coming to soak in this hot spring, so of course I had to try it too!
Gero Onsen isn’t just rich in history—the water feels so soothing that after soaking, all I wanted to do was zone out. Strolling through the onsen town, grabbing a few snacks, then relaxing in a warm bath... this is exactly the kind of happy travel rhythm I love. No wonder it’s firmly ranked as one of Japan’s three famous hot springs. It’s definitely worth experiencing at least once!











