Shinnyosanmayado was built by Daigo-ji Temple, Sohonzan (the head temple of a Buddhist sect) of the Daigo school of the Shingon sect in 1997, in order to solemnly display the righteous behavior of Shinjo ITO, who was the founder of the sect of a religious corporation of Shinnyoen Buddhism.
真如三昧耶堂（しんにょさんまやどう）は、宗教法人真如苑教主・伊藤真乗の浄行を荘厳するために、真言宗醍醐派総本山醍醐寺により1997年に建立された堂。