In 1073, the castle already exists; the first known lord was Guillaume de la Rochandry at the beginning of the 12th century. The 1449 inscription on the castle attests to its reconstruction following the destruction caused by the Hundred Years War. In 1505, Jean de Sainte-Maure, lord of Jonzac, founded the Carmelite monastery on the remains of an old chapel dedicated to Saint Nicolas. The cloister was built in 1657. The young Louis XIV, the Queen Mother and Mazarin stayed at the castle in 1659. The castle remained at Sainte-Maure until the end of the 17th century, then passed through marriage to Espardes de Lussan, which transformed the fortress in beautiful stately home with neat ornamentation and guard until the Revolution.
Currently the north wing of the castle houses the buildings of the Town Hall (restored in the 19th century), and the south wing, those of the sub-prefecture. The cloister was restored between 1976 and 1978, and now houses a cultural center, with exhibition halls and an archaeological museum.
The towers, postern and fountain in the basement date from the 12th century. Of the old feudal castle, only the postern and an isolated tower remain, connected to the main body by a large hall.
The moat in front of the drawbridge was filled was filled in the 19th century. It was reopened at the beginning of the 21st century.
The imposing gatehouse is marked 1549 and therefore dates from the 16th century, a period of work including the north-west tower, while the south-west tower, of a smaller diameter, is from the 17th century. The towers flanking the postern have retained their defenses. At each, the loopholes have been retained or enlarged. Stone stairs serve each floor and access the walkway. This passage seems to have been discovered, as evidenced by the gargoyles. The crenellation includes machicolations with archers in the middle of the merlons. The slate roofs are high pepperboxes on the towers, and a curious set with two sides connecting two pepperboxes for the gatehouse
The fountain located in the basement of the sub-prefecture, has a niche and a niche frame decorated with sculptures imitating stalactites. Carved mask. The fountain was probably built by Léon de Sainte-Maure, Count of Jonzac, who enlarged and embellished the castle in the middle of the 12th century.
In a former courtyard of the castle, a theater was built in the 19th century. It is a round building with approximately 300 seats.