Plain loop Pointe Saint-Gildas

Préfailles (French: [pʁefaj] (listen)) is a commune in the Loire-Atlantique department in western France.

The Saint Gildas Point (French: Pointe Saint-Gildas, Breton: Beg Gweltaz) is a rocky point located on the Côte de Jade, in the far west of the Pays de Retz, in the municipality of Préfailles (Loire-Atlantique), France. The point lies at the south of the Loire estuary and the port of Saint-Nazaire lies on the opposite, north, bank.