In this study, the outer gates of the Royal palace and the area called "Tsuiji-no-uchi" inside the gates on the pre-modern era are considered. As the six gates had been built before 1643 and the other three had been added before 1708,the area had been expanded down south. The area was recognised as the sacred place. Accordingly, the Bakufu bore the cost of the fences and the gates in order to landscape it. It was possible that before 1643 the area around the palace had been identified as the "Jinchu" which had been conceptualised since the medieval period.
