Plessix-Balisson

Languenan (French pronunciation: [lɑ̃ɡnɑ̃]; Breton: Langenan) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.

Corseul (French pronunciation: [kɔʁsœl]; Breton: Kersaout; Gallo: Corsoeut) is a commune in the Côtes-d'Armor department of Brittany in northwestern France. The town was a major Roman town and contains Roman ruins. The town hall contains a small archaeological museum.

Trégon (French pronunciation: [tʁeɡɔ̃]; Breton: Tregon-Poudour) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2017, it was merged into the new commune Beaussais-sur-Mer.

Ploubalay (French pronunciation: [plubalɛ]; Breton: Plouvalae) is a small town and former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2017, it was merged into the new commune Beaussais-sur-Mer.

Beaussais-sur-Mer (French pronunciation: [bosɛ syʁ mɛʁ]; Breton: Bosez-Poudour) is a commune in the department of Côtes-d'Armor, western France. The municipality was established on 1 January 2017 by merger of the former communes of Ploubalay (the seat), Plessix-Balisson and Trégon.

The Temple "of Mars" is the vestige of a Romano-Celtic fanum and its courtyard, located in Corseul, in the department of Côtes-d'Armor, France.

Créhen (French pronunciation: [kʁeɛ̃]; Breton: Krehen; Gallo: Qerhen) is a commune in the Côtes-d'Armor department of Brittany in northwestern France. The Arguenon river flows through the commune.

Aucaleuc (French pronunciation: [okalœk]; Breton: Oskaleg; Gallo: Laugaloec) is a commune in the Côtes-d'Armor department of Brittany in north-western France.

The Singing Stones of Brittany (or Pierres sonnantes du Guildo) are a number of rocks located on the left bank of the river Arguenon opposite the ruined castle of Gilles de Bretagne at Notre-Dame-le-Guildo, near Dinard in the Côtes-d'Armor, France. The stones are round and smooth, shiny black and extremely large, weighing in excess of ten tonnes each and are made of a heavy metallic stone that rings like a bell if struck by another smaller piece of the same stone. There are hundreds of tonnes of them and there is no indication of where they came from or how they got there. They are basalt, but this type of rock is usually associated with volcanic eruptions and there is no evidence or history of volcanic activity there. The stones are unlike any of the surrounding stones either on the ground or on the cliff face overlooking them; legend has it that these stones were spewed up by the giant Gargantua.

Saint-Jacut-de-la-Mer (French pronunciation: [sɛ̃ ʒaky də la mɛʁ], literally Saint-Jacut of the Sea; Breton: Sant-Yagu-an-Enez) is a commune in the Côtes-d'Armor département of Brittany in northwestern France.

Lancieux (French pronunciation: [lɑ̃sjø] ; Breton: Lanseeg; Gallo: Lansioec) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.

The Arguenon (French pronunciation: [aʁɡənɔ̃]; Breton: Argenon) is a French coastal river in the Côtes-d'Armor department of the Brittany region. It flows into the English Channel.