Capel y Dyffryn

Capel y Dyffryn is a chapel of the long-side-entry type, with a nearly square plan, set back from the road behind a front yard. It has a roughcast rendered exterior and a slate roof, featuring a tile ridge and a verge of tiles on the right side. The front elevation is symmetrical, with two plaques centrally located and flanked by round-headed windows and doors. The tall sash windows below the transom contain 30 panes, with interlaced glazing bars above the transoms and above the door lintels. The entrance features eight-panel double doors.

The top plaque is original and identifies the chapel along with its date, while the lower plaque is a 20th-century monument to Robert Lloyd of Plas Ashpool, who died in 1792 and was a leader of early Methodism in the area.

Access to the chapel is through symmetrical doors in the north wall, leading into internal timber porches that flank the set fawr and pulpit. The seating is plain and unornamented, arranged in an octagonal plan and strongly raked. There are three forward-facing pews at the front with a central division, and three additional higher pews in the rear corners to maximize seating capacity. The panelling in the entrance porches is also plain and unornamented.

The set fawr is the only gated pew. The pulpit is centrally located, featuring a simply decorated panelled front with rounded and reeded corners and a moulded cornice. There is a short balustrade on each side with short flights of steps. Decorative plasterwork at the rear of the pulpit includes a reeded architrave and panels that echo the detail of the exterior doors.