Ishite-ji is one of the easiest Shikoku pilgrimage temples to visit, close to Dogo Onsen in Matsuyama. The temple complex includes an old gate, halls, statues, and a slightly eccentric atmosphere that rewards wandering.
It is a good place to understand the pilgrimage without committing to weeks on the road. You will often see white-clad pilgrims stopping here before continuing around the island.