Berkshire County Council building, originally called Shire Hall, was built in 1982 costing a total of £27.5 million pound to build.
The design of the building involves a seven low rise octagonal buildings and a emergency control purpose built bunker was established in the basement in case of a nuclear attack.
The complex was completed in late 1982. The council moved out in 1998 when it became surplus to requirements due to the creation of unitary authorities.
The bunker still remains under the building but now being used as document storage by the company Wood Plc.