Built during the Second World War, the Saint-Nazaire submarine base is one of the most impressive concrete structures on the Atlantic coast. Built to house German submarines, it has left a lasting mark on the city's urban landscape and history.

The guided tour explains the origins of this unusual structure, its strategic role during the war and its impact on the development of Saint-Nazaire. Accompanied by a guide, visitors explore the history of the site, from its construction to its gradual conversion, in close connection with the port and the city's reconstruction.

Along the way, explanations shed light on architectural choices, workers' working conditions, daily life around the base and the site's transformations over the decades. The tour offers an in-depth look at a military heritage that has become a central element of Nazaire's identity.

Visiting days and times vary according to the period. We recommend that you contact us in advance to find out about the schedule and how to participate.

Discovering the submarine base is the perfect complement to a stay in Pornichet. It gives you a better understanding of the area's recent history and an emblematic site, at the crossroads of memory, architecture and the port landscape.