Johannesburg ( joh-HAN-iss-burg, US also -HAHN-, Afrikaans: [jʊəˈɦanəsbœrχ]; Zulu and Xhosa: eGoli [ɛˈɡɔːli]) (colloquially known as Jozi, Joburg, Jo'burg or "The City of Gold") is the most populous city in South Africa. With 5,538,596 people in the City of Johannesburg alone and over 14.8 million in the urban agglomeration, it is classified as a megacity and one of the 100 largest urban areas in the world. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, and seat of the country's highest court, the Constitutional Court.
https://en.wikipedia.org/wiki/Johannesburg