What sits in the inner sanctuary is usually a shintai, a body of the kami — most often a mirror, sometimes a sword or a jewel or a stone — and it is not an image of anything. It is a vessel the kami is asked to occupy, and it is generally never seen; at many shrines no living person has looked at it. Some shrines have no sanctuary at all: Ōmiwa in Nara worships Mount Miwa itself and has only a hall of worship with the mountain behind it, and there are shrines whose object is a waterfall or a rock formation. The most striking demonstration of the principle is Ise, where the entire complex is demolished and rebuilt on the adjacent plot every twenty years and the kami is simply moved across — the sanctity is not in the timber. This is a very different relationship between the sacred and the material object than the one that produced the iconoclastic controversies further west.