Kosanji Temple is a Soto Zen temple located in Shimonoseki, Yamaguchi Prefecture, and is known for its Buddhist temple, which has been designated a national treasure. The Buddhist temple is a Zen-style structure that was built at the end of the Kamakura period, and its refined architectural beauty shows the high level of technology and culture at the time. It also has high historical value, and a beautiful garden spreads within the temple grounds, showing different expressions in each season. In particular, during the autumn foliage season, the contrast between the red and yellow trees and the Buddhist temple is wonderful, and many tourists and photography enthusiasts visit the temple.

Kosanji Temple also played an important role in the history of the late Edo period. It is also known as the place where Takasugi Shinsaku, a patriot of the Choshu clan, led the Kiheitai and raised an army in 1864, and the temple grounds are home to historical sites and monuments. For history fans, it will be a moving place as one of the stages where modern Japanese history took place. You can feel the breath of history by strolling through the quiet grounds.