Abstract
The purpose of this paper is to analyze the funds and executional organizations of the castle-reconstructions promoted by the Regent Daewon-gun(大院君) from 1866 to 1873. Furthermore this paper aims to examine the renewed structural systems of the castles at the time. Since Byeongin-yangyo(丙寅洋擾), the French Invasion in 1866, Daewon-gun gave orders to repair and to consolidate the castles, especially focused on the costal zones of Chulla-do(全羅道) and Gyeongsang-do(慶尙道), for defending against the invasions by Western and Japanese troops. The royal secret commissioners dispatched to each province evaluated the results of the castle-reconstructions. The funds were prepared by the donation of the officials, inhabitants and Buddhist monks in each province. The special technical experts worked in the fields of the reconstruction or newly constructions of ong-seong(甕城), chi-seong(雉城) and po-roo(砲樓). The systems of the castles were reformed on the base of the application of gunners and the theories of Minbo-ron(民堡論).