The romantic ruins of Brecon Castle overlook the River Usk in the heart of the old market town of Brecon. Brecon Castle was the creation of a Norman Lord Bernard de Neufmarche in around 1093. The confluence of the Usk and Honddu rivers made this an ideal location for its construction - water was useful for defence, sustenance and for powering the mills. There were no bridges across the Usk at this time, so the fords were also of strategic importance for the Norman's planned expansion westwards and required defending to keep them open. The upstream ford is still known as Rhyd Bernard and is marked as such on some of the older Ordnance Survey maps.