Gorphwysfa Chapel

This is a Classical style chapel, likely dating from the 18th century, built of coursed rock-faced stone with a plinth of larger stones. The front features rusticated, lighter stone dressings and pilasters, topped with a slate roof and a central cupola. The pilasters are fluted with moulded capitals; below a moulded band, they are rusticated and have marble foundation tablets above the bases. The central bay is wider, containing two round-headed doorways with keystones and double panelled doors with overlights. Above this is a triple round-headed window with a sill band providing light to the gallery. The outer bays have single round-headed windows, also with sill bands. A moulded cornice tops the pedimented gable, which bears a roundel inscribed with the building’s date, surrounded by a name inscription. Prominent urn finials sit on moulded bases along the coped gable.

The right side wall, with five windows, has two tiers of round-headed windows. Projecting from this wall is a large, two-storey Sunday school and hall with a hipped roof. An outshut, facing the chapel's side wall, houses stairs and has two stair lights. The hall’s side wall features three round-headed windows on the lower level, two sash windows under segmental heads above, and a single tripartite sash window to the left at a higher level. The rear of the hall has six round-headed windows on the lower level—grouped as 1+4+1—and five segmental-headed sash windows on the upper level, arranged 1+3+1. The hall similarly projects to the left of the chapel, incorporating a door within a flat-roofed vestibule. The left side wall of the hall mirrors the right.

The vestibule, facing the main doorways, has three round-headed lights with etched glass and coloured margin lights. Panelled doors lead into the main chapel, while round-headed arches with panelled soffits provide access to the gallery stairs on either side. The main chapel’s roof is panelled with heavy ribs and includes three central fret-cut stellar panels, alongside a more delicately moulded cornice. The windows have shafted rere arches. A four-sided raked gallery, lower behind the pulpit where the organ is situated, is supported on three sides by cast iron columns with foliage capitals. The cast iron gallery front is sinuous in cross section and has openwork panels of leaves and scrolls. The pews feature moulded ends. The "set fawr" (raised area) is defined by a rail with cast iron columns bearing foliage scrolls and a moulded handrail. The polygonal pulpit has round-arched panels, flanked by stairs with turned balusters and fluted newels.

Panelled doors beside the pulpit and organ, leading to the hall and Sunday school, are located on the upper level, opening onto a full-width corridor providing access to five small school rooms. Stone stairs are housed within an outshut at the right end of the chapel. On the lower level, a hall with a stage is supported by three plain cast iron columns that also bear the organ and gallery directly above.