Pretoria ( ) is South Africa's administrative capital, serving as the seat of the executive branch of government, and as the host to all foreign embassies to South Africa. Pretoria straddles the Apies River and extends eastward into the foothills of the Magaliesberg mountains. It has a reputation as an academic city and center of research, being home to the Tshwane University of Technology (TUT), the University of Pretoria (UP), the University of South Africa (UNISA), the Council for Scientific and Industrial Research (CSIR), and the Human Sciences Research Council. It also hosts the National Research Foundation and the South African Bureau of Standards. Pretoria was one of the host cities of the 2010 FIFA World Cup. Pretoria is the central part of the City of Tshwane Metropolitan Municipality which was formed by the amalgamation of several former local authorities, including Bronkhorstspruit, Centurion, Cullinan, Hammanskraal and Soshanguve. Some have proposed changing the official name from Pretoria to Tshwane, which has caused some public controversy. Pretoria is named after the Voortrekker leader Andries Pretorius, and South Africans sometimes call it the "Jacaranda City", because of the thousands of jacaranda trees planted along its streets and in its parks and gardens. History Pretoria was founded in 1855 by Marthinus Pretorius, a leader of the Voortrekkers, who named it after his father Andries Pretorius and chose a spot on the banks of the Apies rivier (Afrikaans for "Monkeys river") to be the new capital of the South African Republic (; ZAR). The elder Pretorius had become a national hero of the Voortrekkers after his victory over Dingane and the Zulus in the Battle of Blood River in 1838. The elder Pretorius also negotiated the Sand River Convention (1852), in which the United Kingdom acknowledged the independence of the Transvaal. It became the capital of the South African Republic on 1 May 1860. The founding of Pretoria as the capital of the South African Republic can be seen as marking the end of the Boers' settlement movements of the Great Trek. Boer Wars During the First Boer War, the city was besieged by Republican forces in December 1880 and March 1881. The peace treaty which ended the war was signed in Pretoria on 3 August 1881 at the Pretoria Convention. The Second Boer War resulted in the end of the Transvaal Republic and start of British hegemony in South Africa. The city surrendered to