Church of St Elldeyrn at Capel Llanilltern

The Church of St Elldeyrn at Capel Llanilltern is a small and simple church dating from the 18th century. It features a single-cell nave and a narrower chancel, topped with a Welsh slate roof, terracotta ridge tiles, and a cruciform chancel finial. The masonry is made of coursed rubble in various colors, with red sandstone contrasting against blue lias and golden limestone dressings, creating a modest polychromy.

The south doorway is pointed-arched and lightly moulded, approached by three steps, and has a boarded door with very decorative hinges. The nave includes trefoil-headed windows, with smaller versions on the south chancel wall, a quatrefoil window on the west, and an east window of three lights with trefoil tracery flanked by carved shields in rectangular frames. There are buttresses at the southwest, southeast, and northeast of the nave. Attached to the south wall is a plaque commemorating Ann Thomas, who died in 1815, and another in the chancel for Elizabeth Miles, who died in 1764, both in English. Near the church stand several table tombs that are roughly contemporary with the rebuilding, and outside the churchyard to the west is a small parish hall.

Inside, the walls are unrendered and match the colored masonry of the exterior. The nave has a two-bay structure with an arch-braced roof featuring wind braces, while the chancel has a two-bay roof with decorative cusping. The nave contains open pew seating and features large hatchments belonging to the Bassett family, an important Early Christian stone with a Latin inscription, and a medieval font from the 13th century with a round bowl decorated with leaf and flower motifs and a broached base. There are fine wall monuments in both the nave and chancel, particularly to the inhabitants of nearby Park (Parc-y-justice), including the Williams and Price families, with some monuments signed by E Morgan of Canton. The chancel and sanctuary have floor tiles of three different designs, with three steps leading up to a marble reredos featuring a row of discs with cresting. The east window, installed in 1938, was created by Heaton, Butler and Bayne.