St Andrew's Parish Church, Marle Street, Castle Douglas

St Andrew's Parish Church, located on Marle Street in Castle Douglas, was designed by James Barbour in 1869 and extended by him in 1880-81, with the chancel added by J. Jeffrey Waddell in 1931. This cruciform Gothic church features a three-stage tower and was converted into a theatre in 1992.

The church is constructed from whinstone rubble with red sandstone ashlar dressings, including a base and string courses, hoodmoulds, and moulded and chamfered reveals. It has transepts to the north and south.

The tower is attached to the southwest corner of the south transept and has a pointed arch door at its base, featuring a chamfered reveal, nookshafts, and nailhead ornamentation. The door is flanked by foliate label stops on the hoodmould and has two-leaf boarded doors with decorative hinges. A semi-circular stair tower rises to the second stage on the west return elevation, topped with a half-conical roof and a lancet window. The second stage of the tower includes a lancet window, while the third stage has two glazed arrowslits on each face and two tall louvred openings in pointed arch panels for the bell chamber above. The tower is crowned with a crenellated parapet and a colonnetted ashlar spirelet at the southwest angle.

The nave features three stepped lancets at the west end, each with blind oculi in the apron adorned with carving. There are paired lancets on the return elevations and slightly advanced single bay chapels at the re-entrant angles, each with a lancet in a gabled dormer head and a tall piend roof decorated with fleuron carvings. A gabled porch is set in the re-entrant to the north, featuring a pointed arch door and a lancet in the gable head.

The transepts have M-gabled roofs, with each gabled bay showcasing a tall plate traceried pointed arch window and an ashlar cross finial. The chancel has a wallhead that breaks the eaves in the east gable, complete with kneelers and three stepped lancets.

The church features diamond-pane glazing and decorative cast-iron gutter brackets, with grey slates on the roof. The saw-tooth ashlar coped skews have bracketted skewputts, and lead flashings and finials are present on the piend and conical roofs.

The interior was not seen in 1990, but it includes stained glass by Margaret Chilton and Marjorie Kemp from 1948.

The church's grounds feature retaining walls and railings made of ashlar-coped rubble, with cast and wrought-iron gates and railings. There are two pairs of square ashlar piers with set-off details and paterae bands, and the main gate is flanked by decorative cast-iron lantern standards set on the piers.