I think I took a tour of it once (saw so many temples, castles and shrines (oh my) while there it's hard to tell). If it is the place I'm thinking of, it has a garden with a stone walk that you are supposed to walk on barefoot to help with foot problems. I remember it has stones of one type on one side and stones of a different type on the other with a small partition running down the middle. Am I thinking of the same one? I remember it was massive and the tour couldn't cover the entire castle in one day.