Himeji Castle, also called Himeji-jo, is Japan’s largest and most impressive Samurai castle. Indeed, the white exterior, deep history, and large grounds make it a must-see place. It is easily accessible by train from both Osaka and Kyoto, and this castle has plenty of spots with nice views, some gates, and six floors to see. Whether you like history, photo shooting, or Japanese architecture, it is absolutely worth a day trip to Himeji.