Early settlers The three original farms, Zandfontein, Driefontein and Rietfontein, and later two additional farms, Witkoppen and Cyferfontein, upon which Sandton was founded. Archaeological findings suggest the area, which Sandton comprises today, had originally been occupied by various indigenous groups, before European settlement, most notably the Tswana and, to a lesser extent, Sotho people. The remains of an Iron Age smelter was discovered in Lone Hill, a suburb of northern Sandton. One of the first Voortrekker parties to settle in the area were the Esterhuysen family on the farm Zandfontein (Afrikaans and Dutch for Sandy Spring or Sand Fountain). A monument to commemorate them may be found just off Adrienne Street in Sandown where the family cemetery is located. Zandfontein, Driefontein (Afrikaans and Dutch for Three Springs/Fountains) and Rietfontein (Afrikaans and Dutch for Reed Spring or Fountain of Reeds) encumbered what was to become Sandton. The municipal coat of arms of Sandton pays homage to the three farms with three round fountain barrels on its chevron.[5] In the late 19th-century the Wilhelmi family of Hannover, Germany acquired the farm Driefontein No. 3 while Rietfontein was owned by the Ehler family. The original Driefontein homestead, now within the confines of the Field & Study Centre, was looted during the Anglo-Boer War. The ruins are visible on the northern bank of the Klein Jukskei River. The Wilhemi family, upon return from Germany built the ‘new’ 1906 Driefontein Farmhouse on what is present-day Fifteenth Street, Parkmore cum Riverclub. The farmhouse served as the icon and headquarters for the now defunct Sandton Historical Foundation and is listed as a City of Johannesburg Owned Heritage Site. 1960s and 1970s Sandton was established as a separate municipality in 1969 by the office of the Administrator of the Transvaal. It had formerly not formed part of Johannesburg but was managed, in part by the ‘parent city’ and Pretoria through the North Eastern Peri-Urban Land administration. Initially it was very much a residential area consisting mostly of small holdings with a rural “horsey” lifestyle attracting many of the upper-middle classes and Johannesburg elites. It was subsequently dubbed the “mink and manure” belt.[citation needed] The Rivonia Trial derives its name from the locality of Liliesleaf Farm within the Sandton suburb where many of the Black freedom fighters such as Nelson Mandela were captured by the South African state and subsequently tried for treason. Rivonia had previously been known as Edenburg and was changed to make itself distinct from Edenburg, Free State. It was named for the surname Riven. Sandton and its constituencies were traditionally relatively more liberal than surrounds. For example, the motion which never materialised by residents in favour for the inclusion of Alexandra, Gauteng then a demarcated black township in terms of the Group Areas Act, into Sandton’s jurisdiction proved troublesome for the National Party government which had a strong constituency in the adjacent town of Randburg.[citation needed] 1980s and 1990s The construction of Sandton City by Rapp & Maister (which was eventually taken over by the Liberty Group which still retains 75% of the complex) marked a significant change for the Sandton area. It created rapid commercialisation and industrialisation. Sandton came to symbolise the White Flight movement of Johannesburg and secured itself as Johannesburg’s second Central Business District. After the demise of Apartheid, by 1996, Sandton initially formed part of the interim Eastern Metropolitan Substructure,[6] and in 2000 came to be included, along with the former towns of Randburg and Roodepoort, as part of the newly demarcated City of Johannesburg Metropolitan Municipality thus losing its separate municipal government and town status. Despite this, Sandton is still unofficially earmarked as a distinct region of the city and operates as a macro-suburb.