It is said that the Tochoji temple was dedicated to the buddhist monk Kukai who built it in 806. In the temple cemetary Tadayuki (the second lord of the Kuroda clan in the Edo period [1602-1654]), Mituyuki (the third lord [1628-1707]) and Harutaka (the eighth lord [1754-1782]) are buried. Their graves are where they were originally buried. They have been designated as a historical site of the cultural heritage of the feudal clan of Fukuoka.