Mount Pleasant Chapel, Mary Street, Treharris.
Date Unknown. Built in a plain style with no obvious characteristics. Built on bank edge, this chapel has a lower entrance to a basement or caretakers dwelling from the lower ground. The upper level is entered via a central porch (side entered porch). The Chapel is single storey with no gallery nor room for possible expansion of one. The Pulpit is situated to the rear of the chapel. There is also a door the rear left the chapel that enters a small vestry, there is also a second external entrance to this room.

RCAHMW, 3rd January 2008