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Origin and history

The ramparts of Fos-sur-Mer are an integral part of the medieval castle of the city, built in the 14th century. This castle, owned by the Viscounts of Marseilles, was in a major strategic position: it controlled access to the salt and fisheries of the Berre pond, as well as an essential route from Marseille to Arles. Its dominant location also allowed to monitor a 25 km long shoreline strip, including agricultural land and rural churches such as Saint-Julien.

In the early Middle Ages, the site was already a place of power, with grain silos and graves discovered on the eastern slope of the castle. These remains, similar to those found near Notre-Dame-de-la-Mer Chapel, suggest an ancient and continuous occupation. The castle became the fief of the lords of Fos, the local family having gained its influence thanks to the guard of this strategic site conferred by the archbishop of Arles in the tenth century.

The ramparts, classified as a historic monument since April 21, 1937, are silent witnesses to the conflicts that have marked the region. In the 11th century, the lords of Fos, like Pons IV, took part in the first crusade alongside the Count of Toulouse. Their repeated resistance to the Provencal Comtal Authority, especially in 1018 and 1056, illustrates the geopolitical importance of the site. The castle and its ramparts were also the scene of local wars, such as that between the Fos and the Viscounts of Marseilles in 1020.

The medieval period saw the castle and its ramparts integrated into a wider defence network, including abbeys like Saint-Gervais, founded in 992 and affiliated for a time with Cluny. This abbey, located between the pond of the Estomac and the Crau, played a spiritual and economic role complementary to the military function of the castle. The ramparts, by protecting this complex, ensured the safety of the salinary and agricultural activities, the pillars of the local economy.

In contemporary times, the ramparts survived the major transformations of Fos-sur-Mer, including its industrial expansion in the 20th century. Despite the creation of nearby port and industrial areas, these medieval remains remain a symbol of the historic heritage of the city. Their classification in 1937 underlines their architectural value and their role in Provencal history, between feudal conflicts and economic development.

Today, partly preserved walls of the château de l'Hauture are integrated into a heritage path including the Notre-Dame-de-la-Mer chapel and the Saint-Sauveur church. They recall the time when Fos-sur-Mer was a strategic crossroads between land and sea, before becoming a major industrial pole in Provence-Alpes-Côte d'Azur.

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