Bonshō

Shrine & Temple Buildings

Bonshōbonshō / 梵鐘

A large bronze bell cast for Buddhist temples, prized for its deep, resonant tone.

Bonshō are massive cast-bronze bells suspended in temple bell towers. The prefix "bon" (梵) comes from Sanskrit meaning "pure" or "sacred." Their ideal tone quality is called "ōshiki-chō" — a solemn, resonant pitch achieved through masterful casting techniques. Inscriptions and lotus patterns are often cast into the surface.

Japan's oldest bonshō belongs to Myōshin-ji in Fukuoka, bearing a 698 CE inscription. The three greatest bonshō are said to be those at Chion-in and Hōkō-ji in Kyoto, and Tōdai-ji in Nara. Hōkō-ji's bell is historically notorious — its inscription "kokka ankō" was accused of splitting Tokugawa Ieyasu's name, becoming a pretext for the siege of Osaka Castle. The inscription remains visible today. A bonshō's sound carries approximately two kilometers.