Okayama is the calm, practical hinge between western Honshu and Shikoku. Most travellers first meet it as a Shinkansen stop or the place where trains peel south across the Seto Ohashi Bridge, but the city is worth more than a platform change.
The central pair is excellent: black-walled Okayama Castle, nicknamed Crow Castle, faces Korakuen across the Asahi River. Together they make one of the easiest and most rewarding castle-and-garden visits in Japan. Around them sit compact museums, quiet canals, and enough good food to make an overnight stop feel sensible rather than dutiful.
Okayama also has a folk-tale identity. The story of Momotaro, the Peach Boy, is everywhere: statues at Okayama Station, sweets in souvenir shops, and peach motifs around town. Use the city as a base for Kurashiki, Naoshima, or Kotohira on Shikoku, but give its own garden, castle, and museums a full day.