In this report we discuss about the meaning of the Boundary Space. This research is based on the novel "KUSAMAKURA" as a literary text and written by Soseki NATSUME. We selected four places as the Boundary Space. 'YAMAMICHI' has the meaning of 間 (ま), where the place can assimilate with the nature and get purified spirit, thus people can visualize or anticipate the proceeding space. 'CHAYA' is the junction where two different worlds get through and at the same time, this is the place where Substantial Space and Insubstantial Space coexist. 'YADO' means 境, where we can get the spirit of 境. This is the place where Substantial Space and Insubstantial Space can be exchanged. 'RIVER' has the meaning of the third space where Insubstantial Space is in the process of being shaped into Substantial Space. In conclusion, it can be noted that the four different types of Boundary Space have different meaning of each representative place. Likewise, although there are several different Boundary Spaces exists in architectural space, this different space has all different meanings.
