Mishima Taisha Treasure Museum

Mishima Taisha is a Shinto shrine located in Mishima City, Shizuoka Prefecture, and serves as the first-ranked shrine of Izu Province. Revered for centuries as the chief protective shrine of the Izu and Tokai regions, it has long commanded the devotion of countless warlords. Its treasure museum houses an exceptional collection of masterwork blades and armor, beginning with nationally designated treasures that shine brilliantly in sword history, with a particular focus on pieces from the Kamakura and Muromachi periods.

Among the museum's prized blade collections stands the Important Cultural Property tachi inscribed with the smith-name Mutsumitada. Attributed to Kobizenmasatsune, a master smith representative of the early blade period in Bizen Province (present-day Okayama Prefecture), this tachi is estimated to have been crafted in the late Heian period (11th century). It has long been celebrated as a masterwork embodying the highest technical standards of the formative era of the Japanese sword. Its graceful sori (curvature), orderly hamon (blade pattern), and refined jihada (surface texture) convey the ideal form that later generations of smiths aspired to emulate.

The ties between Mishima Taisha and warlords run deep. According to tradition, Minamoto no Yoritomo visited the shrine continuously from the time of his exile to Izu, and on the eve of his uprising (1180), he is said to have offered prayers for victory at Mishima Taisha. Since then, successive warlords of the Kamakura shogunate have donated blades and armor in abundance, and the museum's collection represents an accumulation of this storied history. Furthermore, the shrine has been revered across generations by powerful eastern warrior houses such as the Hōjō, Imagawa, and Tokugawa clans, and masterwork blades from each historical period have been dedicated to it.

Mishima boasts a rich history as a post station on the Tōkaidō and is blessed with natural beauty, offering panoramic views of Mount Fuji and Mount Hakone. Visitors can enjoy exploring the shrine grounds associated with Minamoto no Yoritomo, experience Mishima's pristine spring water and scenic vistas, and visit the treasure museum—a complete experience of history and nature.