Johannesburg, established over 120 years ago during the gold rush on October 4, 1886, is one of the world's most youthful major cities. This is one of the fascinating facts about Johannesburg. Its size is only surpassed by Cairo, Egypt, making Johannesburg the second-largest city in Africa.
This is a companion discussion topic for the original entry at https://southafricafacts.co.za/facts-about-johannesburg