Canet and its château are first mentioned at the dawn of the second millennium (11th century). The first mention of the church of Saint-Martin in the heart of the medieval château goes back to 1075.

The fortress covers an area of 3,500 m2.

Half of the interior area is taken up by various buildings forming part of the château, and the other by a sort of empty esplanade, formerly a cemetery until the 13^th century. The entrance door to the vast fortified enclosure opens to the south, facing the village. On reaching the square one finds oneself opposite the fortified chapel which with its massive structure protects the entrance to the château itself, located between the nave and a large building with no particular use.

To the west, the mound used as a motte-and-bailey castle and topped by its modern water reservoir. Towards the town, a large round tower (13th century), with its base laid out as a tank. To the north in the shadow of the chapel the ice well dug in 1688 which is in perfect condition.