The latter part of the twelfth century and the early thirteenth century were characterized by the emergence of the Cylindrical Keep, which served as a transitional element linking the Shell and Rectangular Keeps of the preceding era, alongside the significant advancement of castellation that took place in the thirteenth century. However, this development should not be perceived as a sudden and radical transformation, as numerous signs can be found in the castles of the twelfth century that indic ... (Read More)