St Andrew's Roman Catholic Cathedral, 168 Clyde Street, Glasgow

St Andrew's Roman Catholic Cathedral, Glasgow, was designed by J Gillespie Graham and built between 1814 and 1817. It is a large, Neo-Perpendicular style church with a rectangular plan, constructed from cream-coloured ashlar sandstone. A base course and hoodmoulds to the pointed arch windows are prominent features.

The south elevation is three bays wide and gabled, with semi-octagonal buttresses rising to octagonal, finialled turrets at the centre. A pointed arch doorway is flanked by nook shafts and topped with a crocketed ogee hoodmould, featuring a two-leaf, segmentally arched, panelled door and a pointed tympanum. A cill course runs below the tall nave window, which is three lights wide with transomed curvilinear tracery. The gable culminates in a decorative, corbelled gabled niche containing a figure of St Andrew. Pierced, coped lattice work forms the skew parapet. Polygonal turrets flank the elevation, and the aisle bays have smaller, similarly detailed three-light windows. Angle buttresses incorporate pointed, cusped panels terminating in crocketted pinnacles, with crenellated skew parapets to the aisles.

The east elevation has six symmetrical bays with two-light windows containing quatrefoil tracery at the head of each bay. These are separated by buttresses. A doorway is located in the outer left bay below a window, topped with a billetted architrave. Four centre bays contain canted, flat-roofed ashlar confessional boxes at ground level, each with cusped windows in chamfered sides. A coped crenellated parapet tops the elevation. Five two-light clerestory windows are positioned behind the nave, interspersed with buttresses and crocketted pinnacles.

The west elevation, facing Fox Lane, mirrors the east elevation with six bays, sharing similar detailing but lacking the canted projections.

The north elevation features a shallow, canted apse projecting at the centre, with tall three-light windows on each face and a coped crenellated parapet. The gable apex is crowstepped and blank, topped with a cross finial.

The cathedral has diamond lead-pane glazing and slate roofs, with decorative gutter-heads retained.

The interior incorporates alterations made by the younger Pugin in 1871 and 1892. It includes central and side aisles, a plaster fan vault with ornate bosses, keel-shaped clustered columns with capitals, painted and gilded chevron carving to the depressed chancel arch, a marble reredos and canopied marble altar. Fleur-de-lys finials adorn the stalls, and lattice panelling features on the confessional doors. Decorative stained glass lights are found in the apse windows, and a modern tripartite screen is located between the vestibule and nave with some etched glazing. Lady Chapel and the Chapel of Our Lord contain fine tripartite, Caen stone altars, pierced marble coped parapets and wrought bronze gates. Other notable features include an ornate stone font, a polychrome marble pulpit, and a marble piscina.