The museum, which is housed in the Château de Vitré (along with the town hall), was founded in 1876 by Arthur de la Borderie to provide an encyclopaedic history of the period. It tells the story of the medieval fortified castle. First built in around 1080 by the baron of Vitré on a rocky headland dominating the Vilaine valley, the castle was rebuilt in the 18th century in its current triangular form. In the meantime, the Vitré family joined the Laval family and in the 15th and 16th centuries the estate was inherited by the La Trémouïlle family. An interesting example of a medieval castle on the border of France and Brittany, its museum recounts the history of Vitré through its décor, private apartments, decorative arts, apothecary, and more.