The West Range forms part of Sir John Baker's original house of the 1530s. Sackville-West and Nicolson enlisted architect A.R. Powys to help convert the stables into a library, known as the Big Room and containing an important literary collection. The room as a whole is a recreation of Knole, "Vita's record of her disinheritance". Powys provided most of the architectural input into the conversion of the buildings at Sissinghurst, including the Priest's House and the South Cottage, as well as occasionally advising on elements of the design of the gardens.