Nagayu Onsen, Ōita: A Sparkling Bathing Experience in Kyūshū’s Fizziest Waters

Riverside hot-spring resorts in Nagayu illuminate the Serikawa.

Nagayu’s carbonated spring water.

The “soda pop” Lamune Hot Spring resort.

Lamune’s rotenburo open-air bath.

The Gozen’yu center for therapeutic hot-spring bathing.

Nagayu’s riverside “crab bath.”