A tower was built in 1940 at the former site of the fort of Joshinji Temple (auxiliary fort of Kamiakasakajo Castle) by donations from pupils, students, teachers and others throughout the country to mark the 600th anniversary of his death.
没後600年を記念して、昭和15年（1940年）に全国の児童学生や教職員等の募金により浄心寺塞（上赤坂城支塞）跡に建てられた記念塔。