Clitheroe Castle in Clitheroe, Lancashire, England is a motte and bailey castle built in a natural carboniferous limestone outcrop, grid reference SD742416.It has been suggested that Clitheroe Castle may have been first built before 1086 as there is reference to the "castellatu Rogerii pictaviensis" in the Domesday Book. However, it is likely the passage refers to another castle.[1] One alternative is that it was built around 1186 by Robert de Lacy as an administrative centre for his estates in the area but later passed by inheritance to the Crown. It consists of one of the smallest keeps in the country[nb 1] and at one time it was surrounded by a curtain wall. It was anciently the seat of the Lords of Bowland.A document from 1304 mentions ditches and moats surrounding the castle, however these have since been filled in.[3] Source and acknowledgement Wikipedia