Castell yng Nghaerdydd oedd Castell Caerdydd. Trefnwyd y dymchweliad y castell ar gyfer y prosiect Blaidd Drwg. (TV: Boom Town) Adeiladwyd yr orsaf ynni a roedd y castell yn aros ar eich traed. (TV: Everything Changes)

Aed Jack Harkness i'r castell gan John Hart i wylio'r bomio y ddinas. (TV: Exit Wounds)

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