Hand-tinted plans, sections and block plan of the gymnasium for Western Heights with a table giving the dates of building and costs. There are two cross sections of the building and plans of the ground-floor, gallery and roof. The ground plan also shows the banks around the gymnasium and the utilities. The block plan shows the Grand Shaft Barracks and Drop Redoubt. The table shows the authorisation, commencement and completion dates and the estimated and actual costs.