Wikipedia
Trefriw is a village and community in Conwy County Borough, Wales. It lies on the river Crafnant in North Wales, a few miles south of the site of the Roman fort of Canovium, sited at Caerhun. At the 2001 census, the community had a population of 924, reducing to 783 at the 2011 census.
Trefriw lies on the edge of Snowdonia, on the B5106 road to the north-west of Llanrwst, and about 4½ miles north of Betws-y-coed by road. It is located on the western slopes of the glaciated Conwy valley, below the ridge of Cefn Cyfarwydd, the village having been largely built in a semicircle at the point where the river Crafnant flows from its hanging valley to join the river Conwy. The river Crafnant still provides power for the woollen mill, and in the past provided power for a number of other industries based along its banks, such as a forge which provided quarry tools.
Most of the village lies within the Snowdonia National Park, the boundary running down the main street of the village.
Apart from its reputation as a good starting point for walks (the village has Walkers are Welcome status and stages an annual walking festival), Trefriw is today mostly known for its woollen mills, and for the nearby chalybeate spa, first known to have been used by the Romans and further developed in about 1700. Its waters were one of very few throughout Europe to have been classified as a medicine due to their high iron content.