This series is related to the buildings on the School campus and documents their history. Most of the collection is made of photographs and artwork, as well as architectural plans. Each sub-series focusses on a different building.

A selection of photographs in colour and black and white of the opening of the Lynn Wilson fields, an annual OO dinner and presentations/ events that have occurred on the playing fields.

A collection of documents, including photographs and commemorative plaques, relating to the School's cricket pavilions on Doncaster Close since the 19th century.

A collection of documents relating to the Wilson Fields and cricket pavilion, including photographs of the opening. In 2005, the Springfield Playing Fields on Ashwell Road were renamed the Wilson Fields, to honour O.O. Lynn Wilson ('57). Lynn Wilson also funded the construction of a pavilion on the fields. The official opening ceremony took place on 16 May 2005.