Mosaics reached their fullest development under the Romans who used them to decorate the floors of their houses and public buildings. This book gives a comprehensive and fully illustrated history of mosaics in the Greek and Roman world, and studies their development over a thousand years throughout the Roman Empire. Chapters are devoted to technique, to the role of mosaics in architecture, and to their social implications and the role of patrons. This book is the only complete study in depth of this rich material.