Kangi-in (歓喜院) is a Buddhist temple in Kumagaya, Saitama Prefecture, Japan. It was founded in 1179 and is affiliated with the Kōyasan Shingon-shū sect of Buddhism. The temple's Shōden Hall (聖天堂, shōden-dō) was designated as a Japanese National Treasure in 1984.[1] It is the only building in Saitama to have been designated as a national treasure.[2] | ||||||