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Origin and history

The Gallo-Roman Theatre of Argentomagus, located in Saint-Marcel in Indre, is a hybrid building of theatre-amphitheatre type, built in the first century. It is part of an ancient urban context marked by its role as a road junction, attested by the Puisinger table and the Antonin route. The site, located to the west of the urban core, is associated with a temple, forming a suburban sanctuary.

The history of the monument reveals two distinct phases: a first theatre, built under Tiberius or around the middle of the first century, is profoundly redesigned a few decades later, before being dismantled in the second century to give way to a second, larger and regular theatre. The latter, with an 85 m diameter cellara and a stage building, illustrates the evolution of Gallo-Roman construction techniques. The materials of the first theatre are reused, and vomits are added to facilitate access for spectators.

The site was abandoned between the late fourth and early fifth centuries, with partial recovery of materials in the Middle Ages. The remains, including stone stands, an elliptical orchestra and traces of colonnade, testify to this double occupation. Ranked a historic monument in 1970, the theatre offers valuable insight into the cultural and religious practices of the Roman Gaul, in a region then crossed by major commercial axes.

Archaeological excavations, including those led by Françoise Dumasy in the 1980s, have clarified the chronology and architectural features of the site. The studies highlight the adaptation of buildings to topographical constraints, as evidenced by the irregular shape of the first theatre, backed by a natural slope. The second theatre, on the other hand, presents a more geometrical plan, reflecting a desire for greater monumentalization.

Today, the remains of Argentomagus, integrated into the museum and local archaeological sites, constitute an exceptional heritage to understand urbanization and leisure in the secondary towns of the Roman Gaul. Their preservation makes it possible to study the cultural exchanges between Rome and local populations, as well as the social organization around public performances, reserving places of honour for notables.

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