
Like an ancient temple adorning over the city it governs, the Union Buldings are a modern day acropolis, built at the highest point of South Africa's capital city, Pretoria, it forms the official seat of South Africa's government and houses The Presidency as well as the Department of Foreign Affairs.
Designed by Sir Herbert Baker in 1908, building began in 1909 and was completed in 1913. It took approximately 1265 artisans, workmen and labourers almost three years to construct, using 14 million bricks for the interior office walls, half a million cubic feet of freestone, 74 000 cubic yards of concrete, 40 000 bags of cement and 20 000 cubic feet of granite.
The design of the buildings was largely determined by the nature of the site. Baker envisaged identical wings of rectangular office blocks, each representing one of the two official languages.
They were to be linked by a semicircular wing, and the space in-between the two wings was levelled to form an amphitheatre as in the Greek fashion for gatherings of national and ceremonial importance.
Baker wanted the buildings to be built of imported granite, but any idea of using anything but South African stone for the most important government building of the new state was unthinkable to those who commissioned it, as a result, the terraces and retaining walls in the grounds are built predominantly of mountain stone quarried on site, the foundation of the building is of granite, while freestone was used for the exterior walls, the amphitheatre and major courtyards.