Watch fish swim in an old school pool

When a small village school closes, the building is sometimes given a new life, and one has become an aquarium where sea creatures swim in the old outdoor pool and tanks fill the classrooms. You wander the corridors and the poolside at your own pace, surrounded by reminders of the school it once was. It is in Muroto, at the southern tip of Kochi on Shikoku, far from Tokyo, Kyoto and Osaka, so plan it as part of a Shikoku trip.