Nagaokakyo Onsen
- Location
- Nagaokakyo, Kyoto, Japan
- Water type
- silica
- Temperature
- 42 °C
- pH
- 7.2
Water profile
Relaxing — deep, immediate muscle release.
Rich in trace elements — gentle on the skin.
Soft water — natural, classic buoyancy.
Nagaokakyo Onsen provides mineral thermal bathing in the historically resonant city of Nagaokakyo, which served for a decade (784–794 CE) as the capital of Japan under Emperor Kanmu before the imperial court relocated to Heiankyō (present-day Kyoto), leaving behind a significant chapter in Japanese history whose archaeological remains—the Nagaoka Palace Site—are now designated National Historic Landmarks beneath this quiet suburban city between Kyoto and Osaka. The thermal waters draw from the deep Kyoto basin aquifer geology, providing sodium chloride mineral immersion for a community that connects Japan's two great ancient capitals along the Hankyu and JR Kyoto railway lines while preserving a civic identity rooted in springtime bamboo shoot (takenoko) cultivation and the Otokoyama Hachimangu Bamboo Festival. Soaking in Nagaokakyo's mineral waters on the archaeological footprint of an ancient capital offers a thermal experience uniquely layered with Japan's transition from Nara to Heian civilization.