The Canadian War Museum was formally established in 1942, although portions of the museum's collections originates from a military museum that operated from 1880 to 1896. The museum was operated by the Public Archives of Canada until 1967, when the National Museums of Canada Corporation was formed to manage several national institutions, including the war museum. In the same year, the war museum was relocated from its original building to the former Public Archives of Canada building. Management of the museum was later assumed by the Canadian Museum of Civilization Corporation (later renamed the Canadian Museum of History Corporation) in 1990. Plans to expand the museum during the mid-1990s resulted in the construction of a new building at LeBreton Flats. Designed by Moriyama & Teshima Architects and Griffiths Rankin Cook Architects, the new Canadian War Museum building was opened to the public in 2005.