The Half Roundhouse

The Half Roundhouse is a heavy engineering repair shed that has been converted into commercial storage premises. It was built in the mid-19th century for the Leeds and Thirsk Railway Company and underwent alterations in the 20th century. The structure is made of brick with a corrugated iron roof and features a single-storey, semi-annular plan. The bays are defined by pilasters that rise into a dentilled eaves cornice, with a similar band separating the upper and lower portions of the bays.

At the center, there is infill that masks former segmental-arched doorways with fanlights, which are now blocked. Each bay has four keyed, segmental-arched windows, with the two lower windows being tall and also blocked. The ends of the building have four windows at each level. On the north side, there is a two-bay rectangular projection designed in the same style. Continuous skylights run along both roof pitches.

Inside, brick piers that are corbelled at the top are linked by decorative brick bands and support a tracking system for an overhead travelling crane. The roof is supported by cast-iron trusses featuring vertical and diagonal struts and tension braces. A site plan from 1853 indicates the presence of this building, although its exact construction date is not known. It is noted that this building served as an engineering repair shed rather than a locomotive building, as was previously assumed.