This aerial shot shows what was a unique feature of the Wards 8, 9 and 10 complex.   There are two toilet blocks per ward, seen as square-shaped columns to the left of the main ward building.    This design feature was included to allow separation of patients with syphilis from those with gonorrhea.

photograph courtesy
Alexander Turnbull Library, National Library of NZ, Te Puna Matauranga o Aotearoa