Sasolburg is a large industrial town in the far north of the Free State province of South Africa. Sasolburg is further sub-divided into three areas: Sasolburg proper, Vaalpark (a more affluent cluster of suburbs located about 5 km north of the Sasolburg CBD) and Zamdela (a 'township' or area formerly reserved for Black people). Most White residents of Sasolburg speak Afrikaans as a first language, while most Black people speak Sesotho as a first language. The Sasol corporation has sponsored extensive infrastructural developments in Sasolburg, such as an Olympic size swimming pool. World class athletics facilities and a large number of churches can also be found in Sasolburg. The Ettienne Rousseau Theatre plays host to a wide range of Afrikaans and other artists throughout the year.