Dolwyddelan Castle Dolwyddelan, Conwy, LL25 0JD Retail Phone Number Phone Number icon for Snowdonia retail page 01690 750366 Retail Screen Screen icon for Snowdonia retail page http://cadw.gov.wales/daysout/dolwyddelan-castle/?lang=en Snowdonia Facebook Page Facebook icon for Snowdonia Facebook page Facebook Snowdonia Twitter Page Twitter icon for Snowdonia Twitter page Twitter Snowdonia Youtube Page Youtube icon for Snowdonia Youtube page Twitter A stunning 13th Century fortress, buiilt by Llywelyn Fawr, the Prince of Gwynedd, and ruler of most of Wales, Dolwyddelan Castle stands on a craggy outcrop in the scenic Lledr valley between Betws-y-Coed and Blaenau Ffestiniog. Awards