Church of St David at Llanthony Priory

The Church of St David at Llanthony Priory is a 12th-century building, substantially rebuilt in the late 19th century. It is constructed of roughly cut red sandstone rubble, with a sandstone tile roof. The church is oriented to face March 1st, St David's Day. It comprises a nave and chancel, with a north porch and a bell turret on the west gable.

The nave is a plain rectangular space with four narrow round arched windows on the south wall and three on the north wall. A pointed window with a dripmould is at the east end. There are opposing doorways at the east end, the north doorway being larger. A gabled, 19th-century porch with a pointed arched doorway stands on the north side. The chancel is blank on the north wall and has two round arched windows on the south, and a pair of round arched windows on the east; all these openings are 19th-century, although the north doorways may be earlier. The southwest corner of the church retains fabric from the 12th century, exhibiting a battered plinth, long and short quoins, and a blocked round headed window. Stone verges top the gables, and a cross sits on the chancel gable.

Internally, the walling and rere-arches appear medieval, but were tidied up in the 19th century. An unusual stilted chancel arch was rebuilt in 1893, as inscribed. The nave has a seven-bay arch braced collar beam roof, with wind braces in the 15th-century style; this roof appears to be original, though much repaired in 1893. The chancel has a waggon roof, now stripped of its plaster vault, with closely spaced arch braced collar beam trusses. These trusses are possibly from the 16th century, while the sarking above was replaced in the 19th century. The pews are likely early 20th century. A medieval font, possibly from the 12th century, and a Victorian pulpit are also present. The pulpit is accessed through an opening cut into the wall, originally for the rood loft stair in the 16th century. An early 18th-century communion rail remains. The chancel and nave contain particularly fine engraved slate wall monuments from the early and mid-19th century, including those to Ann Lewis (died 1818), Susan Lewis (died 1852), and Thomas Lewis (died 1854), signed by John Pritchard of Longtown. Good earlier engraved floor slabs are also present. A fireplace on the west wall, one of two formerly visible, supports the theory that this was the infirmary hall of the priory. The bell is dated 1792.