11_diagonal_street | location | south_africa <tsp> south_africa | capital | cape_town <tsp> south_africa | leadername | cyril_ramaphosa <tsp> south_africa | ethnicgroup | asian_south_africans <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 one of the leaders of south africa. which capital is cape town. the address. 11 diagonal street is located in that country and one of the the ethnic groups is asian south africans.11 diagonal street is an office tower in johannesburg, south africa