Hillside, Former Sunnyside Hospital, Water Tank and Former Workshops

Hillside, formerly part of Sunnyside Hospital, is a workshop complex built around 1855-1857, with later additions. It is a single-storey and attic structure featuring five bays, designed in a plain Jacobean style. The complex includes a central, two-stage water tower on the south elevation, which creates a courtyard. The south elevation is made of coursed red sandstone, while the tower features coursed polychromatic sandstone. The other elevations are constructed from rubble, with ashlar margins, a band course on the tower, and a rubble base course. The building has flat-roofed and gabled dormers, as well as some segmental-arched window openings. The tower has a later top stage.

The principal elevation is symmetrical, with the tower slightly advanced at the center. It features a recessed, moulded, round-arched doorway that is partially in-filled, along with a pair of slim round-arched windows in a recessed panel on the first stage. The tower has a machiolated cornice and a later top stage. The flanking sections consist of two bays each, with shouldered, corbelled dormers breaking the wallhead. The outer bays contain bipartite window openings with stone mullions on the ground floor and corniced, flat-roofed dormers above.

The east elevation is asymmetrical and has six bays. It includes a gabled bay on the left and a pair of bay windows on the ground floor, topped with fish-scale slate roofs, one of which features decorative iron brattishing. Shouldered, corbelled dormers also break the wallhead.

The courtyard has a rectangular plan and features a segmental-arched opening leading to a pend under the tower, along with some timber boarded doors.

The interior, partially seen in 2012, retains some original rooms. It includes simple cornicing, timber boarding, and a staircase with barley-sugar twist balusters and a timber handrail. The building has a mix of multi-pane and single-pane timber sash and case windows, with some boarded. The roof is covered with grey slates, and there are raised skews, gable and ridge stacks, as well as cast-iron rainwater goods with some decorative hoppers.