The castle is composed of two parts an upper and a lower, each had a stong gate and round basstions on each side , with a ditch and draw-bridges , and it is probable was entirely re-built by the Conqueror when he visited this city A.D. 1069 Within the upper Ballium are some towers of Norman architecture ; one is called Julius Caesar's in the upper part of which has been a chapel as appears by the holy water pot , and some figures painted on the wall , and seems from the elegant roof and pillars to have been built at the same time and in the same stile as the Chapter House in the cathedral

Outer Castle Gate taken down in 1790.