Minakuchi Okayama Castle Ruins (Mt. Kojo)

This castle was originally commissioned by Hideyoshi Toyotomi to be built on Mt. Kojo.
Its stone walls still remain intact, and its historic facade is still preserved.
It is easy to hike up and navigate for beginners, and for seasonal scenery there are cherry blossoms in spring and colorful changing leaves in autumn, as well as a scenic view of the former Tokaido road.