The Tanganyika Territory Public Works Department was founded in the early 1920s by Sir Horace Byatt, the Territory’s first British Governor. It's headquarters were located in Dar es Salaam. Following the end of the Second World War the primary work of the Public Works Department was upon creation of new infrastructure, including public housing, road building, sewage provision and electrification. Following independence in 1961, the Tanganyika Public Works Department continued but faced major re-organisation in 1964 when Tanganyika and Zanzibar united to form Tanzania.