11_diagonal_street | location | south_africa <tsp> south_africa | capital | cape_town <tsp> south_africa | leadername | cyril_ramaphosa <tsp> south_africa | ethnicgroup | coloured <sep> 11 diagonal street is an office tower in johannesburg, south africa it was built in 1983 to a height of 80 metres it is designed to look like a diamond as it reflects different views of the central business district from each angle of the buildingthe building's architect was helmut jahn 
in south africa (where the capital is cape town) there are many ethnic groups. one of which is called the coloured. cyril ramaphosa is one of the leaders and 11 diagonal street is located there.11 diagonal street is an office tower in johannesburg, south africa