Fukui is the capital of Fukui Prefecture, a practical Hokuriku city with more history than its businesslike centre first suggests. The station area is ordinary, but a short walk brings you to old castle walls, a broad moat, small museums, and one of the region's best strolling gardens.
The strongest reason to come is Ichijodani Asakura Family Historic Ruins, a valley site southeast of town where the Asakura clan built a fortified castle town before Oda Nobunaga destroyed it in the 1500s. It is the sort of place where Fukui stops feeling like a transport stop and starts feeling like a window into medieval Japan.
In town, Fukui Castle still has massive stone walls and a moat around the prefectural offices. Yokokan Garden is quieter and more rewarding, especially when paired with the nearby Fukui City History Museum.
Fukui also has a local food identity. Sauce katsudon, pork cutlet over rice with a sweet-salty sauce, is everywhere, and oroshi soba gives the city a sharper buckwheat-and-radish counterpoint. Fukui is not flashy, but it is an easy, worthwhile day if you like castle towns, gardens, and unhurried regional cities.