Fortified with angular bastions around a central courtyard and supported by a broad embankment, this mighty fort complex was built between 1818 and 1831 by the Savoy Corps of Engineers. It was able to house 840 soldiers and 41,000 kilos of ammunition in its gunpowder magazine; it also had 1500 square meters of storehouses.
Renovation was carried out between the late 20th century and the early 21st century, subsidised by the European Union.
References:Château de Niort is a medieval castle in the French town of Niort. It consists of two square towers, linked by a 15th-century building and dominates the Sèvre Niortaise valley.
The two donjons are the only remaining part of the castle. The castle was started by Henry II Plantagenet in the 12th century and completed by Richard the Lionheart. It was defended by a rectangular curtain wall and was damaged during the Wars of Religion. In the 18th century, the castle served as a prison.
The present keeps were the central point of a massive fortress. The southern keep is 28m tall, reinforced with turrets. The northern tower is slightly shorter at 23m. Both are flanked with circular turrets at the corners as well as semicircular buttresses. Each of the towers has a spiral staircase serving the upper floors. The Romanesque architecture is of a high quality with the dressed stones closely jointed.