Centurion is an area with 236,580 inhabitants in the Gauteng Province of South Africa, between Pretoria and Midrand. Formerly an independent municipality, with its own town council, it has been part of the City of Tshwane Metropolitan Municipality since 2000. Its heart is at the intersection of the N1 and N14 freeways. The R21 freeway also passes through the eastern part of Centurion. The Waterkloof Air Force Base, as well as the Swartkop Air Force Base, are in Centurion.