Historical Monument 25 mai 1938 (≈ 1938)
Ruins protection order.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Roman ruins (cad. 159 B 269): classification by decree of 25 May 1938
Origin and history
The Roman ruins of Saint-Cast-le-Guildo, located in the municipality of the same name in Brittany, date from the Gallo-Roman period. These vestiges consist of panels of walls built with regular bellows bound by a mortar of lime and piled bricks, reinforced by brick foundations forming chaining. The plan suggests a series of small enfilade pieces, four of which are clearly identifiable, complemented by three others. Some floors retain traces of concrete of crushed bricks, vestige of an ancient pavement.
The most probable hypothesis attributes these ruins to a Gallo-Roman villa or military post, although their exact function remains uncertain. Construction techniques, such as bricks and lime mortar, are characteristic of Roman architecture in Gaul. The site, classified as Historic Monument by order of May 25, 1938, bears witness to the Roman occupation in this coastal region of Brittany, now known as Côtes-d'Armor.
The location of the remains, reported as approximate (accuracy noted 5/10), corresponds to the current address of 1 Rue de la Côte Fercot. Their state of conservation makes it possible to study the methods of Roman construction in a regional context, although their integration into a larger urban or rural complex remains poorly known. No source mentions recent excavation or discovery of associated objects, limiting interpretations to architectural analysis of still standing walls.