Semnon

Pléchâtel (French pronunciation: [pleʃatɛl]; Breton: Plegastell) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.

Saint-Senoux (French pronunciation: [sɛ̃ sənu]; Breton: Sant-Senour; Gallo: Saent-Senór) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

Bourg-des-Comptes (French pronunciation: [buʁ de kɔ̃t]; Breton: Gwikomm; Gallo: Bórg-Cons) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

Saint-Malo-de-Phily (French pronunciation: [sɛ̃ malo də fili]; Breton: Sant-Maloù-Fili) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. It is about 25 km south of Rennes.

The Moulin de Macaire is a french hydraulic-powered mill located in the Brittany region, in the department of Ille-et-Vilaine, in the commune of Pléchâtel at a place called Macaire.

Poligné (French pronunciation: [pɔliɲe]; Gallo: Polinyae, Breton: Polinieg) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.

Guichen (French pronunciation: [ɡiʃɛ̃]; Breton: Gwizien; Gallo: Gischen) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

The Canton of Guichen is a canton of France, in the Ille-et-Vilaine département, located in the southwest of the department. At the French canton reorganisation which came into effect in March 2015, the canton was expanded from 8 to 16 communes (2 of which merged into the new commune Val d'Anast).It consists of the following communes:

Laillé (French pronunciation: [laje]; Breton: Lalieg) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. Laillé joined the intercommunality Rennes Métropole on 1 July 2012.

The catastrophe du Boël (disaster of Boël) was a landslide that occurred on June 6, 1884, in a quarry at a place named Le Boël in Bruz, Ille-et-Vilaine, in the west of France. The landslide killed eight people including two children. Groundwater that weakened the cliff and damage caused by explosives used to remove red shale (found as a construction material in the local churches) from the quarry were the principal causes of the accident. The search to recover the bodies took five days. At the time, the event left its mark, probably because of the death of the children and because it impacted different social classes. Editors of several newspapers from Rennes collaborated and sold a magazine at 50 cents apiece to benefit the victims. Donation campaigns were also carried out by the local press.

Bain-de-Bretagne (Breton: Baen-Veur, Gallo: Bóen) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

The Canton of Bain-de-Bretagne is a canton of France, in the Ille-et-Vilaine département, located in the southeast of the department. At the French canton reorganisation which came into effect in March 2015, the canton was expanded from 9 to 20 communes: