Moriah Methodist Chapel was built in 1828, modified in 1836, 1842 and again in 1849 with the addition of a gallery. The chapel was then rebuilt in 1898, by architect W. Jones of Rhondda, in the Romanesque style with an entrance in the gable end and a large arch in the facade. The schoolroom is probably converted from the original chapel.
This chapel has important historical associations with Evan Roberts and the religious revival of 1904-5 because it was in the schoolroom that Roberts addressed the youth meeting of 31 October 1904, marking the beginning of the Revival. Roberts is also buried at Moriah.
Colour digital photographic survey of Moriah Calvinistic Methodist Chapel and Schoolroom, Glebe Road, Casllwchwr, Loughor, by Stephen Hughes, 09/07/2004, consisting of 25 images.