Merthyr Tydfil is a well-known town in South Wales with a rich history. In the 18th century, it was a small hamlet – just a collection of Welsh-speaking farmsteads dotted along the mountains. But within a hundred years, it became an industrial powerhouse with a booming and multicultural population. In this programme, Delyth Liddell, visits Merthyr to find out how that development affected the local religious communities, and still affects it today.

We are guided by local historian, Huw Williams. On our journey, we find out about the Jewish community that flourished in the 1800s, the Salvation Army who sent young women on mission to Merthyr in the late 1800's, and the religious revival of 1904. We also find out about the growth of Islam in Merthyr, and visit a flourishing church.