“Tai-an Utsushi” means the tea-ceremony room which has intended the same architectural design as Tai-an. The purpose of this study clarifies the actual situation of “Tai-an Utsushi” and the tendency in succession to Tai-an. By field study and investigation of documents and historical materials, we found the characteristics of Tai-an as important components of “Tai-an Utsushi”. And we found the relationship of the succession to Tai-an to obtaining materials, the building technology, the location, the truth of Rikyu's creations, and the purpose of building “Tai-an Utsushi”.
