You can find this peculiar example of a keep in the little village of Céroux-Mousty. In the beginning of the 13th century, Arnould I Morel de Limal was mentioned as the builder of the keep. However, according to experts the materials used for the wall openings could point out that the keep was already erected in the 12th century. From 1380 the keep was mortgaged and belonged to many families throughout the centuries. The keep is one of the few remaining examples of our early military architecture. The tower is built with sandstone and each side measures 10 meter and it is 22 meter high and counts 4 floors. The four polygonal hook towers date back to the 16th century. The keep was restored in 1950. You cannot visit the tower but you can view it from every direction because it sticks out in the surrounding landscape.