Hyogo: Himeji Castle, Kobe Beef, and Arima Onsen in One Trip

Himeji Castle is the castle to see in Japan if you only see one — a UNESCO World Heritage site, nicknamed the White Heron Castle for its pale plaster walls, and the best-preserved original wooden castle keep in the country. It's directly connected to Himeji Station on the Sanyo Shinkansen, so it works as a stop between Osaka/Kyoto and Hiroshima rather than a dedicated detour. Expect crowds and stairs inside the keep; the interior is bare wood, not furnished rooms, which surprises some visitors.

Kobe is a compact, walkable port city best known for Kobe beef — genuinely excellent, genuinely expensive, and worth booking ahead at a reputable teppanyaki spot rather than the first sign you see. The Kitano district has preserved Western-style houses from the late 1800s foreign settlement, and Nankinmachi is a small but solid Chinatown. Mount Rokko above the city has a ropeway and night-view lookout that's a nice contrast to Himeji's history-heavy day.

Arima, up in the hills near Kobe, is one of Japan's oldest hot spring towns and a good introduction to onsen culture if you haven't done one yet — it has both iron-rich "gold" water and radium-rich "silver" water, in different bathhouses. Day-trip bathing (nyuyoku) is common if you're not staying overnight; check individual ryokan or public bathhouse policies and hours before you go, as they vary.