Our daughter and I went to Japan this past summer. There was a gorgeous mosaic mural on the wall of the Fransciscan Center Chapel that was created from pottery from each of the villages along the way of the march of the martyrs, though I can't remember now if it was they march of Paul Miki and his companions or the Martyrs of Tokyo.
That sounds so beautiful. (And to me) a little on the emotional side -- just thinking about all the villages they must have walked through -- whether it was these martyrs or the ones from Tokyo that you mentioned. Do you have a pictures?