Okayama Castle, often called "Ujo" (Crow Castle) due to its black exterior was previously a very large complex, but was however mostly demolished during the Meiji period and destroyed during the WWII air raids. Today, most structures we see today including the castle tower is a reconstruction while the only original structure is the Tsukimi Yagura (Moon-Viewing Turret). Located just across the river from Korakuen, this castle makes a perfect combined visit if you are visiting Okayama.