Caer Ddegannwy; Modern Welsh: Castell Degannwy) was an early stronghold of Gwynedd and lies in Deganwy at the mouth of the River Conwy in Conwy, North Wales.
<a href="//commons.wikimedia.org/wiki/User:Llywelyn2000" title="User:Llywelyn2000">Llywelyn2000</a>
<span class="int-own-work" lang="en">Own work</span>