The great Keep was in form nearly resembling the White Tower in the Citadel of London, but still more ancient in its architecture, deriving its date, as was affirmed, from the days of Charlemagne.

• 这个庞大的主楼外形很像伦敦城堡内的“白塔”，但建筑式样更为古老，据说其修建的年代可以远溯到查里曼时代。