The Parc naturel régional d'Armorique, or Armorica Regional Natural Park, is a rural protected area located in Brittany. The park land reaches from the Atlantic Ocean to hilly inland countryside. There are sandy beaches, swamps, rock formations, fast-flowing rivers and the hills of Monts d'Arrée, all blended into one landscape. The park also includes three islands: Île de Sein, Molène and Ouessant.

The Île de Sein is a Breton island in the Atlantic Ocean, off Finistère, eight kilometres from the Pointe du Raz, from which it is separated by the Raz de Sein. Its Breton name is Enez-Sun. The island, with its neighbouring islets, forms the commune of Île-de-Sein in the Finistère department of Brittany in north-western France. Inhabitants of Île-de-Sein are called in French Sénans.