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Heritage classified

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Origin and history

The Gallo-Roman wall of Saint-Lupien, located in Rezé in the Loire-Atlantique, is one of the few preserved remains of the ancient harbour city of Ratiatum. Founded under the reign of Emperor Augustus between 20 B.C. and 10 A.D., this city played a strategic role in river trade thanks to its position on the Loire River. The wall, oriented east/west, bears witness to Gallo-Roman urban planning and its adaptation to the local relief, near a dead arm of the river today filled.

The monument is located in the immediate vicinity of the chapel of Saint-Lupien, in an area marked by ancient and medieval history. Although partially buried, its remains in the basement were recognized as protected and classified as historical monuments by order of 9 December 1986. The property now belongs to the municipality of Rezé, stressing its heritage importance for the region Pays de la Loire.

The location of the wall, at approximately 19 Rue des Amphores, reflects its connection to the artisanal and commercial activity of Ratiatum. Excavations and archaeological studies suggest continued occupation of the site until the Middle Ages, although the material traces of this period are less documented. The wall thus illustrates the superposition of the epochs in an urban space in constant evolution, from antiquity to the modernization of the twentieth century, with the filling of the Loire arm called the Seil.

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