Church of St Mary

The Church of St Mary is a simple rural church with a continuous nave and chancel, and an added north porch. It is constructed of local rubble masonry on boulder foundations, heavily mortared, with freestone dressings. The roof is modern slate with slate coping and ridge, and there is a west gable bellcote. The nave consists of two bays, each featuring a round-headed window, along with a similarly styled west window that has a projecting stone above it. The rectangular east window, dating from the 16th century, has three arched lights with a hoodmould above. The north porch includes a small rectangular leaded light in its north wall, with entry through a round-headed doorway in the east wall.

Entry to the church is through wide double doors from the north porch, each featuring diagonally set tongue and grooved panels. The nave and chancel are continuous, with a four-bay roof showcasing exposed timbers. Each bay is defined by queen post trusses with angled braces that extend down to shaped corbels. The windows contain small panes of coloured glass arranged in geometric and floral designs. To the right of the doorway, at the west end of the nave, are two fonts: one is a rectangular gritstone bowl, and the other is a highly ornate oval bowl made of alabaster. Both fonts are undated and not recorded in the RCAHMW Inventory; the rectangular font may be Medieval, while the alabaster font likely dates from the 19th-century restoration.

The sanctuary is raised by one step and features a moulded rail over a round-arched frieze supported by shaped balusters. On the south wall of the chancel is a brass tablet that records bequests to the church by Queen Anne's Bounty and Robert Wynn, Rector of Llantrisant, from 1720 and 1727. There is also a brass memorial tablet dedicated to Edward Wyn, Rector of Llantrisant and Llanddyfnan, who died in 1671, along with his wife Margaret and their five children: John (1707), Ann, Elen (died 1703), Catherine (died 1679), and Edward, LLD, Chancellor of Hereford (1707). The church also contains two early to mid-18th century gravestones, including that of Edward Wynn of Bodewryd, Chancellor of Hereford, who died in 1755. The bell, according to RCAHMW, features vine scroll ornamentation and is dated 1747.