Japanese-style castles in Korea

fortification

fortress in Busan, South Korea

thumb|Battle of Busanjin - showing the fortress, its defenders & the massed Japanese fleet The Branch Wall-fortress in Busanjin (), also known as Maruyama Castle (, ) and Konishi Castle (), is located at Beomil-dong, Dong-gu, Busan, South Korea. The existing wall-fortress remains were constructed by the Japanese military during the Imjin War. There are two assertions on the name of Jaseong (Subordinate Castle). One is the wall-fortress on Jeungsan Mountain with Jwacheon-dong as the mother castle and accordingly called Jaseong. The other is that Jaseong was constructed on the mountain top as t