What is "zenshuyo"

is a Japanese Buddhist architectural style derived from Chinese Song Dynasty architecture. Named after the Zen sect of Buddhism which brought it to Japan, it emerged in the late 12th or early 13th century. Together with Wayō and Daibutsuyō, it is one of the three most significant styles developed by Japanese Buddhism on the basis of Chinese models. Until World War II, this style was called but, like the Daibutsuyō style, it was re-christened by Ōta Hirotarō, a 20th-century scholar. Its most typical features are a more or less linear layout of the garan, paneled doors hanging from hinges, intercolumnar tokyō, cusped windows, tail rafters, ornaments called kibana, and decorative pent roofs.

Kōzan-ji's butsuden in Shimonoseki, Zenpuku-in's shaka-dō in Kainan, Wakayama and Anraku-ji's pagoda in Ueda, Nagano, all dating to the Kamakura period, are considered the three most important Zenshūyō buildings. Kōzan-ji's butsuden (built in 1320) is the oldest extant building in the Zenshūyō style in Japan.