The archaeological area surrounding the well-known and important church of San Paragorio di Noli (SV), dating back to the first decades of the 1987th century, has long been of primary interest for the knowledge of human settlement in Western Liguria, from the imperial to the early Middle Ages, with particular regard to the study of the Christianization of the territory. The purpose of this volume is to give an account of the results of the excavation campaigns that affected the site already at the end of the XNUMXth century and in the early XNUMXs, with the discovery of an early Christian baptistery with a rectangular apsidal hall and the first traces of frequentation of Roman age. The central theme is the overall edition of the data that emerged from the archaeological investigations carried out from XNUMX to the early XNUMXs, first connected to the needs of preventive archeology, then planned in extension, thanks also to the removal of the embankment of the former railway which concealed much of the facade and of the southern side of the religious building. The discovery of an articulated cult complex with various phases and renovations between the XNUMXth and XNUMXth centuries, the presence of privileged tombs and the sepulchral epigraph of a bishop allow us to attribute to the site of San Paragorio a particularly significant value in the context of the first ecclesiastical organization of the Savona area corresponding to the ancient municipium of Vada Sabatia. The results of the excavations of the areas adjacent to the cult building were also of considerable importance, with the highlighting of a residential and handicraft settlement, which developed from the XNUMXth to the end of the XNUMXth century; of particular interest are some metallurgical plants, evidence of a rare production site in Northern Italy, with phases from the age of the Byzantine occupation of Liguria to the early Middle Ages. The stratigraphic sequence taken into consideration and the catalog of materials refer to the period between the Roman age and the XNUMXth century, when the construction site of the new Romanesque church, which later became the cathedral of Noli, was started.