Video: 'Churchill and The Cabinet War Rooms - Sir Winston Churchill's secrets unveiled' (Aug. 16, 1945, at 43:36)

(Thursday, August 16, 1945; during World War II) — The Cabinet War Rooms, which provided the secret underground headquarters for the core of the British government throughout World War II, were locked today following the surrender of Japanese forces and left undisturbed until Parliament ensured its preservation as a historic site in 1948.