Blaenau Ffestiniog is a historic mining town in Wales. It is in the historic county of Merionethshire. It has a population of 4,875 according to the 2011 census, including the nearby village of Llan Ffestiniog. After reaching 12,000 at the peak of the slate industry, the population fell due to a decrease in the demand for slate.
At one time it was the second largest town in North Wales, behind Wrexham. Today, the town relies heavily on tourists, who come to see the many attractions in and around the town such as the Ffestiniog Railway and the Llechwedd Slate Caverns.
Source: Wikipedia