Togudo in Jisho-ji Temple in the Higashiyama area, built by Yoshimasa ASHIKAGA, has a four-and-a-half tatami-mat room, which is said to be the origin of the tea ceremony room.
足利義政が東山に建てた（慈照寺）東求堂には四畳半の部屋があり、茶室の元祖と言われることがある。