The Couvent des Jacobins was a monastery in Saint-Sever - Jacobin was the French term for the Dominican Order. Founded in 1280 thanks to the support of Eleanor of Castile, wife of Edward I of England, it was partly destroyed in 1569 by Huguenot troops under Gabriel, comte de Montgomery during the Wars of Religion.
It was partly rebuilt thanks to the support of père Antonin Cloche, a native of the town who became master-general of the order in 1686. Its cloister and south and west wings were restored in the Languedoc Romanesque style using pink brick and stone.
After the French Revolution it was re-used as a school, college, agricultural school, store, fire-station, municipal baths and finally a market. From the 1970s it has housed cultural aspects of the town, including the musée des Jacobins.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.