County Hall

County Hall is a building used for county offices, constructed in 1910 by J. A. Bain for the lower and front part, with a rear right extension and top storeys added in 1933 by Cackett, Dick and McKellar. It is built of sandstone ashlar and has a total of six storeys with fourteen bays facing Castle Garth and ten storeys with nine bays on the right side facing the Side. The building is designed in a classical style, featuring a central double door set within a Greek Doric porch that has a triglyph frieze and a prominent dentil cornice above.

On either side of the porch, there are six bays, each with a central four-bay projection. The ground floor is rusticated and has a cornice, with sash windows set in plain reveals. Above this, the building features a giant Ionic Order, with pilasters at the corners and half-columns that define the bays of the projections, along with architraves framing the windows. The first floor has alternate pediments on the projections, and the central windows on each floor are paired. The second floor has moulded sills and a cornice, while the plain third floor has a cornice with a parapet on the outer bays. The central five bays have two top storeys, topped with a raised balustrade. There are later additions that are set back on each side on the upper floors. A cartouche above the porch displays the Northumberland County Arms. Until 1974, this building was a detached part of the County of Northumberland.