Abstract
This study clarified about the block formation inside Thi-pak-sian (Taipei Castle) under Japanese rule.The frame of Tai-pak-sianhad been constituted by walls and streets. The Government-General tried to improve the urbansanitation with utilizing the frame. As a result Three-Tracks-Street was built at the place that castle wall had been built, and the major streets continued to exist. However, the direction effected by Peng Shui also continued to exist; these instances do not mean accession of traditional space order. The plan was merely the utilization of existing geographical features; because traditional planning philosophy had not been considered.
