Buddhist temple
Kōsen-ji
光泉寺（こうせんじ）
Kusatsu, Agatsuma District, Gunma Prefecture
A temple of the Buzan school of Shingon in Kusatsu, Gunma Prefecture, with the mountain name Kusatsuzan. Its principal image is Yakushi Nyorai, and the temple explains that it has long been known as one of the three great hot-spring Yakushi of Japan.
English pages are the site’s own translations of its Japanese pages. The sources cited are in Japanese. 日本語で読む
Prayers associated with this place
Principal image: Yakushi Nyorai
History and things to know
According to temple tradition, it is said to have begun when Gyōki opened a Yakushi hall in Yōrō 5 (721). It later became the bettōji (managing temple) of Shirane Myōjin, and is said to have been rebuilt in Shōji 2 (1200) by the Yumoto clan, lords of Kusatsu. The official guide states that it became an imperial prayer temple in Bunmei 13.
Introduced by this site, based on materials from the shrine or temple and public bodies.
Related kami and buddhas
Before you visit
Opening hours, access, areas open to visitors, and events can change. Please check the latest guidance from the shrine or temple itself before you go.
Official website of the shrine or temple (may be in Japanese)
Sources (in Japanese)
- 光泉寺「御祭神・御本尊・由緒の公式案内」（2026-10-22 確認）
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