Church of St Cwyllog

The Church of St Cwyllog is a simple rural church consisting of a continuous chancel and nave of three bays, with a two-bay western annexe built along the same alignment. It was constructed using local rubble masonry with massive quoins. The roof is covered with thin slates and stone copings; an eastern cross finial and a single bellcote are located at the western end of the nave, and a squat stack is on the western annexe gable.

The western annexe features a 16th-century doorway near the western end, originally with chamfered jambs and a round head, which was converted into a window during a mid-19th century restoration. A modern doorway is located at the eastern end. An original window with two round-headed lights in a square frame, with a moulded label, is found at the eastern end of the south wall; a modern window replaces an earlier one to the west. The western wall retains some original hollow-chamfered gable copings.

The chancel window is a repaired late 15th-century window of three trefoil lights within a shallow pointed arch, with a moulded label. The nave has a late 15th-century north doorway at the right (western) end, which is characterized by chamfered jambs, a pointed head within a square frame, and a moulded label. Two late 16th-century windows are situated in the north wall; each features three square-headed lights with chamfered jambs and mullions. A similarly detailed window is at the east end of the south wall, while the other two south windows are mid-19th-century copies.

According to the Royal Commission on Ancient and Historical Monuments (RCAHM), the bell is said to bear three bulls' heads and initials and a date: R B W E M C W E T 1661.

The church interior, not inspected at the time of the survey, is described by the RCAHM as containing mainly late 18th-century fittings. These include a combined pulpit and reading desk, rectangular in plan, with panelled front and sides. The pulpit features a moulded cornice and a high panelled back with scroll cresting and the inscription and date: M T I I WARDENS 1769. Communion rails, likely contemporary, surround three sides of the altar table.

A 13th-century font is a cylindrical bowl with a cable-moulding at the base. The surface is decorated with carving in relief, the primary motif being an elaborate conventional leaf pattern. Approximately a third of this decoration remains unfinished, showcasing a rectangular pattern of knotwork set out but not completed, and with the cable-moulding on the base being left as a plain roll in part.

Late 18th-century memorials are present for Rowland Hughes of Bryngola, who died in 1762, his wife Margaret (Prydderch), who died in 1801, and their children Mary, who died in 1737 or 1738, John, who died in 1763, and Jane, who died in 1770; William Prichard of Trescawen, who died in 1763, his wife Lettice, who died in 1793, and their son William, who died in 1803; and William Hughes of Bryngola, who died in 1793, his wife Mary (Griffith), who died in 1771, and their son William, who died in 1771. A fireplace was inserted into the western annexe, likely in the 18th century.