This is a three-and-three-quarter mat tea house at Omotesenke. It was said that the original was a four-and-a-half mat tea room that Rikyu designed in a residence near the main gate of Daitoku-ji temple, but the present Fushin’an was modeled on a tea room that was built by the fourth generation Grand Master Koshin Sosa and his father Genpaku Sotan. The name Fushin’an was chosen by Kokei Sochin at Rikyu’s request. It is taken from a Zen saying, ‘Fushin hana hiraku konnichi no haru’, which means, ‘Mysteriously the flowers open. Spring today’. Fushin’an is the representative Omotesenke tea house and is also a general term for the whole Omotesenke organization.