Italian maiolica has a long history extending back into the Middle Ages. That history recounts a slow evolutionary process, with its main themes being: first, the importation of tin-glazed pottery from the Islamic world in the eleventh and twelfth centuries, which has survived primarily as architectural decoration (the bacini inserted into church façades); secondly, the development of the local production of ceramics with lead glazes and then improved tin glazes and with modest painted and incised decoration; thirdly, the diffusion of that production, presumably from Sicily and southern Italy, throughout the rest of the peninsula; and, finally, beginning in the later fourteenth century, the elevation of the quality of production to the level of a veritable art form. Our knowledge of this history has been amply expanded in the last few years by an extraordinary amount of very solid research conducted into the subject by medieval archaeologists and by ceramic scholars—many of the latter talented amateurs who work on their own local traditions in Italy; and this lively interest has had reverberations in both the museum world and the art market.