The traditional townscape of Kagurazaka-KAGAI is appraised by citizens and tourists, whereas the structure of this townscape is not yet clarified. This paper clarified following three points.
1. Prewar Kagurazaka-KAGAI provided more mysterious townscape for visitors than present condition because there are more complex network of alleys and taller buildings.
2. The townscape, which has been rebuilt after the war, underwent big change. But some elements of prewar building design are inherited in KAGAI's buildings. Moreover, many ordinary buildings modeled after KAGAI's buildings in Kagurazaka-KAGAI.
3. We need more consideration how to control a design of buildings out of Kagurazaka-KAGAI.
