As a consequence of extensive urban redevelopment a series of large archaeological excavations were undertaken in the Castlefield area close to Manchester city centre, which uncovered important new evidence relating to Manchester's Roman military settlement. This monograph presents the findings of this significant phase of archaeological work, which unearthed evidence of Roman military, commercial and industrial activity, remains relating to ritual/cult activity, and an extensive collection of Roman artefacts. Taken together these remains hold the utmost significance for disentangling the pre-industrial origins of Manchester, and also sheds light on Roman settlement at the frontiers of the Roman Empire.