Llangollen. Llangollen is a small town and community in Denbighshire, north-east Wales, on the River Dee at the edge of the Berwyn mountains and the Clwydian Range and Dee Valley AONB.
   It had a population of 3,658 at the 2011 census. Llangollen takes its name from the Welsh llan meaning a religious settlement and Saint Collen, a 6th-century monk who founded a church beside the river.
   St Collen is said to have arrived in Llangollen by coracle. There are no other churches in Wales dedicated to St Collen, and he may have had connections with Colan in Cornwall and with Langolen in Brittany.
   Above the town to the north is Castell Dinas Brān, a stronghold of the Princes of Powys. Beyond the castle is the limestone escarpment known as the Eglwyseg Rocks.
   The outcrop continues north to World's End in Wrexham. The area nearest the castle is the Panorama Walk, and a monument to poet I.D. Hooson from the village of Rhosllannerchrugog can be found there. The ancient parish of Llangollen was divided into three traeanau: Llangollen Traean, Trefor Traean, and Glyn Traean. Llangollen Traean contained the townships of Bachau, Cysylltau, Llangollen Abad, Llangollen Fawr, Llangollen Fechan, Feifod, Pengwern and Rhisgog. Trefor Traean contained the townships of Cilmediw, Dinbren, Eglwysegl, Trefor Isaf and Trefor Uchaf. Glyn Traean contained the townships of Cilcochwyn, Crogeniddon, Crogenwladus, Erwallo, Haf
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