Le Châtellier, Ille-et-Vilaine

Le Châtellier (Kasteller; Gallo: Le Chastelier) is a commune in the Ille-et-Vilaine Department in Brittany in northwestern France.

Population
Inhabitants of Le Châtellier are called Castellérois or Castellégiens in French.

Horticulture
The Botanical garden of Upper Brittany is located in Le Châtellier.