"The Roman Pool is decorated from ceiling to floor with one-inch square mosaic tiles," according to the Web site. "These glass tiles, called smalti, are either colored (mainly blue or orange) or are clear with fused gold inside. The intense colors and shimmering gold of the tiles combine to create a breathtaking effect. The designs created by the tiles were developed by muralist Camille Solon. The inspiration for some of these designs came from the 5th Century Mausoleum of Galla Placidia."