| Tachibanayama Castle (立花山城, Tachibanayama-jō) was a Japanese castle in Chikuzen Province, in the north of Kyūshū. It was at the peak of Mount Tachibana, extending in part into the Higashi-ku in Fukuoka.[1] The castle is also known as Rikka-jō, Tachibana-jō, or Rikkasan-jō. The castle was originally built in 1330, by Ōtomo Sadatoshi, Constable (shugo) of Bungo Province, as a show of support to the Tachibana clan.[2] Since it was in a tactically powerful location, looking down upon the port town of Hakata, the castle was fought over throughout the Sengoku period by the Ōtomo, Ōuchi, and Mōri clans. |
