Castle towers were mainly reconstructed after the war in the Showa period, in the 30's and 40's of the Showa period during the 'castle tower reconstruction boom' or 'castle reconstruction boom' after the construction of the reconstructed tenshu (keep) of the Toyama-jo Castle in 1954, but reconstructions at historical sites were often requested to be faithful to the original according to the policies of the Agency for Cultural Affairs from 1988 and when the Takeshita cabinet carried out the Furusato creation project, restorations and reconstructions in wood based on historical materials were performed in principle after the reconstruction of Sanju Yagura (three tiered turret) of Shirakawa Komine-jo Castle in wood in 1990.
昭和戦後以降も、昭和29年（1954年）の富山城模擬天守建設以降、「天守閣復興ブーム」や「お城復興ブーム」などと呼ばれる昭和30年代、同40年代を中心に、主に天守の復興が多く行われたが、竹下内閣のふるさと創生事業が実施された1988年以降には文化庁などの方針によって史跡での再建行為が忠実なものであることが求められるようになると、平成2年（1990年）の白河小峰城三重櫓の木造復元以降は、資料に基づいた木造での復元や復興が原則となった。