Abstract
This paper aims to clarify 1) urban design applying basis of Japanese Castle-Towns had an influence on municipal office buildings and 2)How new municipal office buildings were extend in case of preserving municipal office buildings before the war , analyzing case study of prefectural capital cities based on Japanese Castle-Towns. Findings are as follows : 1) As for preserving architectural space , architectural condition such as without disaster or fireproof building and locational condition such as site area were primary factor , 2) As for preserving Urban Space , Urban Design condition such as locating it eye catch of main street or among moat were primary factor , 3) There were 3 ways of preserving municipal office buildings , to make new buildings high , preserve a part of old ones and move new buildings to the suburbs.
