Okayama Castle (岡山城 Okayama-jō) is a Japanese castle in the city of Okayama in Okayama Prefecture in Japan. The main tower was completed in 1597, destroyed in 1945 and replicated in concrete in 1966. Two of the watch towers survived the bombing of 1945 and are now listed by the national Agency for Cultural Affairs as Important Cultural Properties. Today, only a few parts of Okayama Castle's roof (including the fish-shaped-gargoyles) are gilded in gold, but prior to the Battle of Sekigahara the main keep also featured gilded roof tiles, earning it the nickname Golden Crow Castle (金烏城 Kin U-jō).