a uniquely South African style. Some of the notable structures in Pretoria include the late 19th century Palace of Justice, the early 20th century Union Buildings, the post-war Voortrekker Monument, the diverse buildings dotting the main campuses of both the University of Pretoria and the University of South Africa, traditional Cape Dutch style Mahlamba Ndlopfu (the President's House), the more modern Reserve Bank of South Africa (office skyscraper) and the Telkom Lukasrand Tower. Other well-known structures and buildings include the Loftus Versfeld Stadium, The South African State Theatre and the Oliver Tambo building which is the Headquarters of the Department of International Relations and Cooperation. Central business district Despite the many corporate offices, small businesses, shops, and government departments that are situated in Pretoria's sprawling suburbs, its Central Business District still retains its status as the traditional centre of government and commerce. Many banks, businesses, large corporations, shops, shopping centres, and other businesses are situated in the city centre which is towered by several large skyscrapers, the tallest of which is the Poyntons Building ( tall), the ABSA Building ( tall) and the Reserve Bank of South Africa building ( tall). The area contains a large number of historical buildings, monuments, and museums that include the Pretoria City Hall, Pretorius Square, Church Square (along with its many historical buildings and statues), and the Ou Raadsaal. There is also the Transvaal Museum (the country's leading natural history museum, which although it has changed venues a number of times, has been around since 1892), the National Zoological Gardens of South Africa (or more colloquially known as the Pretoria Zoo), Melrose House Museum in Jacob Maré Street, the Pretoria Art Museum and the African Window Cultural History Museum. Several National Departments also have Head Offices in the Central Business district such as the Department of Health, Basic Education, Transport, Higher Education and Training, Sport and Recreation, Justice and Constitutional Development, Public Service and Administration, Water and Environmental Affairs and the National Treasury. The district also has a high number of residential buildings which house people who primarily work in the district. Parks and gardens Pretoria is home to the National Zoological Gardens of South Africa, as well as the Pretoria National Botanical Garden. There are also a number of smaller parks and gardens located throughout the city, including the Austin Roberts Bird Sanctuary, Pretorius Square gardens, the Pretoria Rosarium, Church Square, Pretoria Showgrounds,