Blaenywaun Baptist Chapel was first built in 1745 with a thatched rook. This was rebuilt in 1795, 1838 and again in 1885. The present chapel, dated 1895, was designed by architect Owen Lewis of London and built in the Sub-classical style. The chapel has a gable entry plan, 2 storeys, a 3-bay facade and slate gable roof. Each end bay has a tall semi-circular headed window opening with keystone and projecting cill and 18-panes with radiating heads. A similar window to the end bays is located above the porch - 6-pane with radiating heads. The semi-circular headed porch contains a small semi-circular headed stained glass windows on each side of the wall.

RCAHMW, May 2011