By the time the fifth and final phase is completed, it is estimated that nearly £1.7 million will have been spent on consolidating and conserving this imposing building.
Erbyn i'r pumed cam a'r cam olaf gael ei gwblhau, amcangyfrifir y bydd bron i £1.7 miliwn wedi'i wario ar atgyfnerthu a gwarchod yr adeilad mawreddog hwn.