Ozu lies in the heart of Ehime Prefecture surrounded by unspoiled forested mountains. Ozu Castle stands in the center of the old town, overlooking the Hijikawa River in a district of traditional residences and other historical buildings. This time on Journeys in Japan, American actor Charles Glover visits Ozu and discovers that it is possible to stay the night inside the castle donjon (main keep) — the only place in Japan where this is possible.

Jonathan Senior discovers Japan's iron history in Yasugi, a transport hub from long ago. He learns about the old clay tatara furnaces for producing steel blooms and visits an impressive castle ruin. His trip also takes him to artisan studios for crafting swords, incense and iron candle stands.