Uozu Onsen Toyama
- Location
- Uozu, Japan
- Water type
- sodium chloride
- Temperature
- 43 °C
- pH
- 7.8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Uozu Onsen is a charming hot spring in Uozu city, located at the southeastern corner of Toyama Bay in Toyama Prefecture, famous for the ancient埋没林 (buried forest) of cedar trees submerged in the bay over 2,000 years ago and now preserved as a UNESCO-recognized natural monument visible through glass-bottomed viewing tunnels. The chloride-rich thermal waters warm the body effectively and ease muscular fatigue, providing a restorative base for visitors exploring the buried forest museum, the bay's firefly squid fishing grounds, and the majestic Tateyama mountain backdrop. The onsen combines thermal wellness with access to one of Japan's most extraordinary natural and historical curiosities.