Zisa castle, Palermo

There are three different designs of hexagrams in this Mosaic wall inlay in Zisa castle, Palermo, Sicily : big one with a dot in the center of the hexagon, small one with a hexagon inside, small one with a big circle inside. There are four halves of hexagrams on the fringes

Picture is courtesy of "woodcreeper" who published it on Flickr.