As part of the former School of Artillery, the gym was once used as a recreational facility for service people residing at North Head Barracks, alongside an oval and tennis courts. It has a basketball court, as well as squash courts.

Located south of Building 1, this large, high ceiling space is ideal for set builds, storage or as a production base for cast and crew. Internal facilities include two large squash courts and spacious upper mezzanine overlooking the entire gym. Electricity, water, toilets and parking are available.