Dolwyddelan Castle is a thirteenth-century castle located west of Dolwyddelan in Conwy County Borough, North Wales. Tomen Castell, a late twelfth-century tower, is located south-east of the castle.
Dolwyddelan Castle was probably begun by Llywelyn ab Iorwerth, the ruler of the Kingdom of Gwynedd, between 1210 and 1240 to defend an east–west route within the kingdom. It superseded Tomen Castell, a small tower possibly built by Llywelyn's father, Iorwerth Drwyndwn. Dolwyddelan was captured by Edward I of England in 1283, and despite being immediately refortified its military significance subsequently declined.
Wikipedia https://en.wikipedia.org/wiki/Dolwyddelan_Castle
Address LL25 0, United Kingdom
Coordinates 53°3'10.697" N -3°54'30.187" E