The Ministry of Defence is to sell one of its historic Whitehall buildings as part of a money-saving drive.
The Old War Office Building, where military planning took place for conflicts including both World Wars and the Cold War, will be sold on the open market, the MoD said.
It is hoped that the building, which housed figures including Sir Winston Churchill, could fetch £100 million.
Defence Secretary Philip Hammond said: "Bringing MoD teams together into one building will save the taxpayer around £8 million a year in running costs as well as generating a capital receipt. It will also enable closer working and collaboration within the department."