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Origin and history

The Roman ramparts of Soissons are the ancient remains of the fortified enclosure of Augusta Suessionum, Gallo-Roman city founded in the first century on the current location of Soissons, in the department of Aisne. Originally open city, it was re-entered at the end of the third century around a castrum of 12 to 13 hectares, bounded by these ramparts. This retreat responded to the barbaric threats to the north of Gaul, transforming the city into a protected military command centre, also home to a weapons factory attested in the fourth century.

The rectangular line of the ramparts (300 × 400 m, or 1,500 m in total length) was reinforced by ditches, square towers and doors. The wall was 70 m wide in some places (including squares), and was built of limestone laid on blocks used for public and religious monuments. These vestiges illustrate urban adaptation to the crises of the Lower Empire, combining defence and reuse of existing materials.

Among the preserved portions, the one located in the former bishopric (rue de l'Evêché) was classified as a historical monument by order of 12 July 1886. These remains, property of the municipality of Soissons, recall the strategic importance of the city as Gallo-Roman stronghold, before its medieval and modern evolution. Their present state allows us to study late fortification techniques in northern Gaul.

Available sources (Wikipedia, Monumentum) highlight the poor accuracy of their location (level 5/10 according to Monumentum), with an approximate address at 8 rue des Minimes. Their partial preservation offers nevertheless a material testimony of urban transformations between Antiquity and the Middle Ages, in an area marked by conflicts on the borders of the Empire.

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