The last shōgun, Tokugawa Yoshinobu, upon returning to his native Mito on the day his castle was surrendered in spring 1868, secluded himself in this room at the Kōdōkan, the official school of Mito, to demonstrate his loyalty to the new Imperial government. The room, named Shizendō (至善堂), is an Important Cultural Property, designated by the Japanese government. Its name means something like “Hall of Ultimate Virtue.”

Also see .