St Mary's Church, Callington

St Mary's Church was consecrated in 1438, although the nave may be slightly earlier; it was originally a chapel of ease to St Sampson's Church in South Hill. Evidence of an earlier chapel on the site is recorded in 1384. In the 15th century the building was enlarged with the addition of the tower, south aisle, south porch, north aisle, and clerestory, and the nave was heightened. The church fell into disrepair in the 19th century and was restored by J.P. St Aubyn in 1858, with a north aisle added by J. D. Sedding in 1882. The tower and bells were destroyed by fire in 1895. The church was designated a Grade I listed building in 1968.

The church is built of ashlar granite and rubble with slate roofs and set-back buttresses. The nave and chancel share a continuous roof, while the south aisle has a lower separate roof and the north aisle continues in line with the chancel, later extended by a 19th-century vestry. Much 15th-century stonework was reused in the later north aisle. The tower has freestone dressings, corner turrets with pinnacles, and a battlemented parapet. The windows are predominantly Perpendicular in style, many restored in the 19th century. The chancel east window is largely Victorian work incorporating earlier masonry, and small two-light clerestory windows light the nave from above.