This scholarly work provides a detailed archaeological investigation into the ancient theater located at the Argentomagus site in Saint-Marcel, Indre. Authored by Françoise Dumasy-Mathieu, the study examines the structural and cultural significance of this Gallo-Roman monument. Through an analysis of excavations and historical context, the text explores the intersection of Gallic and Roman influences in the region, offering insights into the architectural heritage and social life of the ancient inhabitants. It serves as a vital resource for understanding the archaeological landscape of central France during the classical period.