Alexandra Gate and former Royal Alexandra Infirmary, excluding later flat-roofed section to north, Neilston Road, Paisley

A two- and three-storey and attic, elaborately detailed, former hospital dating from 1897 to 1900 by the Paisley architect, Thomas Graham Abercrombie. The building is roughly E-plan and is in the Scottish Renaissance style. Its main entrance is situated to the north and there is a linking corridor with three pavilion arms to the south. The building is built in snecked and stugged red sandstone with ashlar margins and has a variety of window openings, including some transomed and mullioned windows and some rectangular windows. The pavilion to the east was converted to flats in the 1980s and is called Alexandra Gate. The remainder of the building is unused (2017).

In accordance with Section 1 (4A) of the Planning (Listed Buildings and Conservation Areas) (Scotland) Act 1997 the following is excluded from the listing: the later flat roofed section to the north.

The advanced, roughly square-plan, 3-bay entrance section lies at the centre of the rear of the building with the main entrance door to the west. The west elevation has a central, round-headed doorpiece, flanked by paired Ionic columns and with a broken, segmental pediment above. There are corner turrets with attached columns and finialled bellcast lead caps to the northeast, northwest and southwest corners. A square-plan tower with a corbelled parapet and bartizans rises from the southwest corner. A 2-storey passage with 7 round headed arches connects the central section to west pavilion.

The east elevation of Alexandra Gate has two, advanced, 3-windowed gabled bays. These flank a corbelled and canted oriel window, which rises from the 1st floor, and a round-headed arch with parapet at 1st floor which has a veranda above with a central column. At the north end of Alexandra Gate is a large circular former ward with pedimented windows at ground level and with elaborate pediments to the attic dormers. This section has a conical roof with a bellcast capped ventilator at the apex.

The south end of each pavilion arm has semi-circular, railed verandas with ashlar Roman Doric columns at the ground floor and cast-iron columns at the 1st floor and conical roofs. Each veranda is flanked by projecting square bays with piended roofs.

The north end of the west pavilion arm has rounded corner turrets with pedimented dormers and conical slate roofs.

The windows of Alexandra Gate are timber sash and case with plate glass glazing pattern, or timber plate glass casement windows. The roofs have mostly green slates with some piended and some gable roofs. There are louvred ventilators, mostly octagonal with bellcast or facetted lead caps.

Some of the interior of Alexandra Gate was seen (2016). This section has been converted into modern flats. There are wide, dog-leg staircases with decorative metal balusters and timber handrails.