Heledd Cynwal, Iestyn Jones a Siôn Tomos Owen sy'n ymweld â Bangor, dinas dysg a chartref cadeirlan hynaf Cymru. We visit Bangor, a university city that's home to the oldest Welsh cathedral.
4 o fisoedd ar ôl i wylio
48 o funudau
Gweld holl benodau Cynefin
