This wedge shaped spa-bath attached to the home's gym area features a particularly unique design element. A pronounced stripe runs down the center of the floor and onto the ceiling, separating the textured, striated porcelain stone tile on the left from the smooth glass tile on the right. The bisecting stripe is actually a mixture of the porcelain stone and the glass tiles, creating a definitive and visually pleasing transition. John Carlson, Carlson Productions, LLC.