Shokasonjuku Academy is where Yoshida Shoin, a distinguished intellectual in the Choshu domain, ran a private academy in the last days of the Tokugawa Shogunate. It is designated as a National Historic Site.

It is a one-storied small wooden house with an area of only 50 sq m. Originally, it only had an 8-mat lecture room. With the increase in the number of disciples, a 4.4-mat room, two 3-mat rooms, the doma (earth-floored space) and a mezzanine floor were added by the hands of Shoin and his disciples.

In 1842, Bunnoshin Tamaki, Shoin’s uncle, founded a small academy in his house. Later it was discontinued for a while but Gorozaemon Kubo, Shoin’s another uncle, repaired the barn into a lecture room and resumed the academy. Then in 1857, Shoin took it over and developed many youths.

He treated his disciples equally regardless of the social status. Most of his disciples were sons of low-ranked warriors. Though he taught at the academy for less than three years, his disciples absorbed his ideas and played key roles in bringing about the Meiji Restoration. His disciples include Takasugi Shinsaku, Kusaka Genzui, Yamagata Aritomo, Ito Hirofumi and Shinagawa Yajiro.