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 
the capital of south africa is cape town and the leader is cyril ramaphosa. there are various ethnic groups within south africa which include both asian south africans and white south africans. additionally. 11 diagonal street is located in south africa.11 diagonal street is an office tower in south africa south south