Thornlie Parish Church, West Thornlie Street, Wishaw

Thornlie Parish Church is a Gothic-style church constructed in 1876 by David Thomson and situated on a corner plot in Wishaw. The church is cruciform, with a three-stage, square tower topped with a broach spire on the southeast corner, and a smaller two-stage, round tower set back on the southwest corner. A gabled porch fronts the building. It is built of squared yellow sandstone with ashlar margins, featuring a base course, a string course at gallery level, set-back buttresses with sawtooth coping, and predominantly lancet windows with hoodmoulds.

The southwest elevation, the principal facade, has stone steps leading to a gabled porch. The central entrance has a double-chamfered pointed arch supported by engaged columns with stiff-leaf capitals and mask stops to the hoodmoulds. A small trefoiled lancet window is located in each flanking bay, while a large five-light window with geometric tracery is situated above the cross gable, complete with a crocketted stone finial.

The square tower to the right has staggered, small, plain, cusped lancet windows on the first stage. The window above has an elongated gablet hoodmould and paired small cusped windows with an oversized hoodmould, with a cill course. A five-light pointed arch stone-mullioned opening provides access to the belfry, incorporating a corbelled cornice. The broach spire features gabled lucarnes. The squat round tower to the left angle has a double-chamfered lancet arch doorway to the southwest, and four regularly fenestrated, cusped lancet windows on the second stage, under a continuous hoodmould cill course, surmounted by a corbelled cornice and a conical roof.

The northeast elevation is constructed of squared and snecked rubble, and features a large, quadripartite window with geometric flatwork and stone mullions. The southeast elevation showcases an advanced gabled transept, with three plain lancets at ground level, and a large, hood-moulded plate tracery window of paired bipartites and a multifoil, with a quatrefoil to the cross gable. The nave bays are regularly fenestrated, except for the tower to the far left, which has three trefoiled lancets at ground level and two to the gallery. A bipartite trefoiled window and a single window are located on the ground and gallery levels to the right, and a door provides access to the tower.

The northwest elevation mirrors the southeast elevation, with the exception of the absence of a hoodmould to the large transept window, and the use of squared and snecked rubble. The church has leaded glass windows, with stained glass in the chancel. The roof is covered with graded grey slates, decorative ridge tiles, sawtooth stone coping to the skews, and cast-iron rainwater goods.

The interior is galleried with a segmental-arched, barrel-vaulted nave and quadripartite vaulting to the aisles, featuring moulded springers and capitals. Flanking stairs lead to the gallery from the narthex.

The adjacent church hall, designed by James Cowie in 1899, is constructed of squared and snecked sandstone. It is a large, gabled hall that abuts the rear of the church facing Caledonian Road, with a slightly advanced, central entrance porch featuring a roll-moulded chamfered reveal, kneelered skew putt, a trefoil to the cross, a blind quatrefoil to the apex, a hood mould, and a crossgable with stepped blind lancets. An interlocking gabled bay to the left has a bipartite plate-traceried window, while a connecting passage leads to the church with a door on the left.

The church hall also has leaded glass and grey slates with lead ridges, sawtooth stone coping to the skews, and cast-iron rainwater goods. The boundary wall is constructed of tooled, squared and snecked sandstone with saddleback coping, and includes gabled stone gate piers, non-original decorative cast-iron railings, and decorative gates.