Archwiliwch y cyfan o’r gaer fawreddog hon ar ben y clogwyn — a darganfyddwch 900 mlynedd o hanes yng Nghastell Cas-gwent. Beth am alw heibio’r Castell wrth ddilyn taith gerdded ddiwylliannol Cil-y-coed i Gastell Cas-gwent, a grëwyd mewn partneriaeth ag @walescoastpath? Gweler y ddolen yn ein bio am y canllaw cerdded llawn, a darganfyddwch sut allwch chi fwynhau ein safleoedd fel aelod Cadw ar wefan Cadw. Leave no stone unturned when you explore this magnificent clifftop fortress — and discover 900 years of history at #ChepstowCastle. Why not pop by the Castle whilst following our Caldicot to Chepstow cultural itinerary, created in partnership with @walescoastpath? See the link in our bio for the full walking guide, and find out how you can enjoy our sites as a Cadw member on the Cadw website.