You can also take a tour behind the closed doors into the archive store where around 100,000 individual items relating to Montgomeryshire, Radnorshire and Breconshire are housed.
Dewch hefyd ar daith y tu ôl i’r llenni i’r archifdy sy’n gartref i tua 100,000 o eitemau unigol sy’n gysylltiedig â Sir Drefaldwyn, Sir Faesyfed a Sir Frycheiniog.