St Kiaran Episcopal Church, Argyll Street, Campbeltown

St Kiaran Episcopal Church, built in 1891 to a design by Ronald Walker Stirling, stands on Argyll Street, Campbeltown. The church was preceded by decorative iron gates designed by Henry Edward Clifford in 1885. It is a simple, rectangular, five-by-one-bay Gothic hall church with a projecting entrance porch and organ recess on the southeast elevation and a vestry projecting to the left of the northwest elevation. The building is constructed of bull-faced, squared, and snecked sandstone with droved ashlar dressings on the street elevation, porch, and the left side of the southeast elevation while random rubble with stugged and droved dressings is used elsewhere.

The southwest (Argyll Street) elevation has a symmetrical gable end, with a cill course, a triple lancet window with a hoodmould above, and a blind slit window in the gablehead, topped with a cross. A single-story, two-bay vestry wing projects to the left, with cill and eaves courses, an entrance door to the right bay, and a bipartite window to the left.

The southeast (entrance) elevation displays five bays; a gabled entrance porch projects in the outermost left bay, featuring deeply chamfered reveals to a pointed-arched door with a hoodmould. Double lancet windows are positioned in the second and third bays. A gabled organ transept projects in the fourth bay, with a single lancet window in the fifth bay, and a door leading to a basement below.

Leaded glazing with coloured glass borders is found in the lancet windows. The windows in the vestry are timber with hoppers. The entrance doors are vertically-boarded timber, double-leafed. The roof is covered in grey slate with terracotta ridge tiles on the hall, porch, and transept. The building has profiled cast-iron gutters and downpipes. Ashlar skew copes feature block skewputts.

Inside, the entrance porch is lined with vertically-boarded timber and has an open timber roof. The main hall has a timber floor, stepped at the northeast end. A timber handrail with turned timber balusters is present at the second step, while a timber handrail with decorative wrought-iron at the third step gives access to the upper levels. Vertically-boarded timber wainscoting with a moulded dado rail runs along the walls. A three-bay oak altar, centered on the northeast wall, comprises engaged columns dividing panels featuring Gothic decoration. Above sits a canopied reredos, with a panelled base, a buttressed frame, and a curved projecting canopy surmounted by a triangular pediment bearing a cross. Stencilling decorates the northeast wall flanking the reredos. An organ is housed in the recess to the right of the transept, with stencilled pipes supported on a stop-chamfered decorated timber frame with finials. The open timber roof has curved trusses with a kingpost, supported on red sandstone ashlar corbels. An octagonal ashlar font, dating from 1893 features at the southwest end; it rests on an octagonal base seated on a square concrete base and includes a column at the center, with four flanking columns featuring floreate capitals and a carved timber cover.

A boundary wall of stugged squared and snecked stone with an ashlar cope runs along Argyll Street (original railings have been removed). Stugged and droved gate piers, with battered bases and quatrefoils on gabled caps, support decorative wrought-iron, two-leaf gates.