Mae'r Prif Weinidog, Carwyn Jones, wedi nodi dechrau'r gwaith o adeiladu'r Ganolfan Gynadledda Ryngwladol newydd mewn seremoni ar safle gwesty'r Celtic Manor.
First Minister Carwyn Jones has marked the start of building work on the new International Convention Centre Wales in a ground breaking ceremony on the site at the Celtic Manor Resort.