The Château de Vitré is a medieval castle in the town of Vitré, in the Ille-et-Vilaine département of France. The first castle in Vitré was built of wood on a feudal motte around the year 1000 on the Sainte-Croix hill. The castle was burned down on several occasions, and eventually was bequeathed to the Benedictine monks of Marmoutier Abbey. The first stone castle was built by the baron Robert I of Vitré at the end of the 11th century. The defensive site chosen, a rocky promontory, dominated the valley of the Vilaine. A Romanesque style doorway still survives from this building. During the first half of the 13th century, baron André III, rebuilt it in its present triangular form, following the contours of the rocks, surrounded with dry moats. At his death, the land fell to the family of the Counts of Laval. Guy XII de Laval enlarged the castle in the 15th century. During this period, the final defensive works were realised, notably the gatehouse with double drawbridge, tour Saint-Laurent (St Laurent Tower, the main keep later pierced with cannon apertures) and tour de la Madeleine (Magdalene Tower). Nevertheless, in 1487, Guy XV de Laval opened the castle to French troops without a fight. From the end of the 15th century, alterations concentrated on improving the comfort of the castle, including the construction of galleries and a renaissance style oratory (1530). The Parlement of Brittany took refuge in the castle three times (in 1564, 1582 and 1583), while plague raged in Rennes. Under the Rieux and Cologny families, owners of the castle between 1547 and 1605, Vitré sheltered Protestants and became for some years a Huguenot stronghold. In 1589, the castle resisted a five-month siege by Philippe Emmanuel, duc de Mercœur. In 1605, the castle became the property of the Trémoille family, originally from Poitou. The castle was abandoned in the 17th century and began to decline, notably with the partial collapse of the St Laurent Tower and the accidental fire which destroyed the feudal residence at the end of the 18th century. A départemental prison was built in place of the residence and occupied the northern part of the castle, including the Magdalene Tower. The prison became a barracks with the arrival of the 70th infantry regiment between 1876 and 1877. The castle was bought by the town in the 1820 for 8500 francs. In 1872, it was