11_diagonal_street | location | south_africa <tsp> south_africa | ethnicgroup | asian_south_africans <tsp> south_africa | capital | cape_town <tsp> south_africa | leadername | cyril_ramaphosa <tsp> south_africa | ethnicgroup | white_south_african <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 
cyril ramaphosa is the leader of the south africa where two of the ethnic groups are the white south africans and the asian south africans. the capital city is cape town and the country is the location of 11 diagonal street.11 diagonal street is an office tower in south africa south south