Outer Bailey: Arnhem Block

The Arnhem Block, located in the Outer Bailey of Carlisle Castle, is a Grade II listed building originally constructed as a master gunner's house and later used as a garrison hospital. Built between 1804 and 1805, it incorporates part of an early 18th-century house. The building features Flemish bond brickwork set on a chamfered stone plinth, with a calciferous sandstone gabled cornice. The roof is made of graduated greenslate and includes gabled dormer windows, along with large 19th-century brick chimney stacks at each end.

The structure is two storeys high and consists of five bays. The central entrance has a plank door framed by a calciferous sandstone surround with an alternate-block pattern and a false keystone, accessed by steps. The sash windows, which have glazing bars, are set in plain reveals with painted stone sills. The gabled dormers are adorned with decorative bargeboards. Above the entrance, there is a painted stone panel inscribed with "ARNHEM," commemorating one of the battle honours of the Border Regiment. The rear wall of the building incorporates brickwork from the 18th century.

The interior has been extensively altered over time. Documentation regarding its rebuilding in 1804 by Captain Hartcup can be found in the Public Record Office, as noted by McCarthy et al in 1990. The building became a hospital by 1830, and wings were added in the 1870s, though these were removed after 1963. The Castle itself is designated as a Scheduled Ancient Monument.