St Bestius' Church (C of I), Woodside Road, Killeter, Castlederg, Co Tyrone, BT81 7TA

St Bestius' Church of Ireland Church is a detached double-height church built in 1822, located on the west side of Woodside Road in Killeter, Castlederg.

The church consists of a rectangular nave with a single-storey gabled porch added to the south around 1840, abutted at a re-entrant angle by a lean-to boiler room. An additional aisle to the west was built in 1870 to designs by Welland and Gillespie, abutted at the south by a single-storey lean-to porch. A single-storey lean-to vestry was constructed to the north around 1890.

The roofs are pitched asbestos slates with blue and black clay ridge tiles and raised stone verges on corbelled eaves courses. A chimney stack rises from the north gable. A square-headed smooth rendered bellcote with a round-arched-headed aperture in a moulded surround, containing a bronze bell, sits on the south elevation. The west aisle has raised stone verges on simple moulded kneelers, while the vestry to the north has a natural slate roof with terracotta ridge tiles and raised verges over cavetto moulded kneelers.

The walls are painted roughcast with smooth chamfered quoins over a smooth banded plinth. The west aisle, lean-to porch and vestry have squared-and-snecked rockfaced sandstone walls with ashlar sandstone quoins and projecting plinths.

Windows throughout are round-arched-headed sandstone plate tracery containing leaded stained glass, with surrounds consisting of fluted pilasters surmounted by an archivolt with keyblock detail and sandstone sills. Windows to the west aisle, lean-to porch and vestry have stepped sandstone surrounds with chamfered sills.

The principal elevation faces east and is four windows wide. The south gable is abutted at its centre by the gabled porch containing a single window. Replacement square-headed double-leaf vertically-sheeted timber entrance doors face east, while the west elevation contains a vertically-sheeted timber door within the lean-to boiler room.

The north gable contains a group of three windows with stepped sandstone surrounds and shared chamfered sills, the central window being larger. A gabled dormer surmounts the vestry at this end. The vestry's east elevation contains a square-headed vertically-sheeted timber entrance door in a shouldered chamfered surround, accessed by three stone steps.

The west aisle consists of three groups of three windows separated by buttressing with offsets. The south gable of the aisle contains a large plate tracery rose window in a bead moulded surround with rubble voussoirs. A lean-to porch abutts this elevation at the re-entrant angle with the nave, containing a single window at the left, while a gabled dormer at the right contains a round-arched-headed vertically-sheeted timber entrance door in a bead moulded surround, accessed by two stone steps. The north gable of the aisle contains a group of three windows, the central window being larger.

The church sits within a churchyard containing grave markers dating from the nineteenth century to the present day. The site is bounded by roughcast walling with saddleback concrete coping. Access is from the east through squared-and-snecked square pillars supporting a pair of steel gates.

Rainwater goods are cast-iron half-round gutters and round downpipes, with some replacement uPVC fittings.