This museum has good displays on Himeji-jō and other castles around Japan. In addition, the museum covers the main periods of Japanese history, with some English explanations. At 10.30am, 1.30pm and 3.30pm, one lucky person can even try on a suit of samurai armour or a kimono (ask at the front desk to be included in the lottery).
The museum is a five-minute walk north of the castle. Last entry 30 minutes before closing.
