Atsumi Onsen
- Location
- Tsuruoka, Yamagata, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Atsumi Onsen is a traditional hot spring resort in Tsuruoka City, Yamagata Prefecture on the Sea of Japan coast of Honshu, situated along the Atsumi River in a quiet mountain gorge where the simple mineral waters have been enjoyed by bathers for over a thousand years, making it one of the oldest hot spring resorts in the Tohoku region and one of Yamagata Prefecture's most historically significant thermal bathing destinations. Tsuruoka City is known for its remarkable concentration of traditional Japanese culture including the syncretic Dewa Sanzan mountain pilgrimage, the Shonai Domain samurai heritage, and the extraordinary culinary tradition designated as a UNESCO Creative City of Gastronomy, centered on the exceptional local ingredients and traditional farming practices of the Shonai Plain. Atsumi Onsen complements these cultural riches as a place where visitors can immerse themselves in the old-fashioned ryokan hot spring tradition of the Japanese Sea coast, bathing in simple mineral waters whose gentle, restful character has accompanied Tohoku mountain communities for more than a millennium.