There are several castles which were built under the influence of the western castle construction style for artillery battles and the bastion-type fortresses (such as Goryokaku), but except for Goryokaku, they were not fit for actual fighting because of reduced construction period and budget, and the construction work for most of them was suspended by Haihan-chiken (abolition of feudal domains and establishment of prefectures).
また、大砲戦に対応した西洋式築城の影響を受けて、五稜郭など稜堡式要塞の影響を受けて築城された城もいくつか存在するが、五稜郭以外は、工期・予算を大幅に短縮又は圧縮されてとても実戦に耐えうるものではないもの、廃藩置県により工事が中止になったものがほとんどである。