The use of mosaics is one of the hallmarks of finer homes and businesses of the Greco-Roman world. Mosaics are made by laying small stones called tesserae into a matrix of mortar. Mosaics were most commonly used as floor surfaces, although they were sometimes used on walls as well, especially in the later periods. Floor mosaics were often relatively simple geometric designs, sometimes using just a few colors. Sometimes, if the owner could afford it, mosaic floors depicted other things, such as scenes from mythology, historical events, or other things. Sometimes an......