Deganwy Castle was an early stronghold of Gwynedd in Deganwy, at the mouth of the River Conwy in Conwy, north Wales. It sits at an elevation of 110 m on a volcanic plug in an area of limestone known as the Vardre.
Wikipedia https://en.wikipedia.org/wiki/Deganwy_Castle
Address LL31 9, United Kingdom
Coordinates 53°17'52.052" N -3°49'46.696" E