Brière Regional Natural Park is a protected area in the Pays de la Loire region of France. It covers a total area of with a core of wetland, the Grande Brière, covering approximately. The area was officially designated as a regional natural park in 1970.The park includes the following member communes:AsséracCrossacDongesGuerandeHerbignacLa Baule-EscoublacLa Chapelle-des-MaraisMissillacMontoir-de-BretagnePornichetPrinquiauSaint-André-des-EauxSaint-JoachimSaint-LyphardSaint-Malo-de-GuersacSaint-MolfSaint-NazaireSainte-Reine-de-BretagneTrignac