Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Okayama Prefecture is a prefecture of Japan located in the Ch goku region on Honsh island. The capital is the city of Okayama. During the Meiji Restoration; Bitch Province, Bizen Province and Mimasaka Province were combined to form Okayama Prefecture. Okayama Prefecture borders Hy go Prefecture, Tottori Prefecture and Hiroshima Prefecture. It faces Kagawa Prefecture in Shikoku across the Seto Inland Sea and includes 90 islands in the sea. Okayama Prefecture is home to the historic town of Kurashiki. Most of the population is concentrated around Kurashiki and Okayama.