Roman frontiers defined the Roman Empire, one of the greatest states that the world has ever seen. By understanding these frontiers we can better understand the relationship between Rome and her neighbours. Leading scholars of the frontiers of the Roman Empire have come together to present this collection of essays published in honour of one of their most distinguished practitioners, Professor Bill Hanson. The focus of the book is how we understand the operation and function of Roman frontiers, how we learn about the effect of these frontiers on the people who lived in their vicinity, and how new scientific techniques, particularly remote sensing, help us to extend our knowledge. The book is divided into three parts: studies of the frontier installations; considerations of the value of artefacts; and discussions of future directions for research. The contributors bring the results of recent work to the public, including the ways in which we interpret and present Roman frontiers, and cast light on the vitality of life on the frontier zone nearly 2,000 years ago.