The city is also home to Africa's busiest airport and connects millions of people to destinations across the globe each year.
Johannesburg, known as Africa's richest city, is home to approximately 12,000 millionaires and features the world's deepest gold mine, the Mponeng mine, which extends 4 kilometers underground. This South African metropolis, often called the "City of Gold," has a rich history tied to the gold rush of the late 19th century, which led to its rapid development and economic prosperity. Despite its wealth, Johannesburg faces significant challenges including high crime rates, poverty, and inequality. The city's economy is diverse, with finance, real estate, and manufacturing playing significant roles alongside mining. Johannesburg also boasts a vibrant cultural scene, with attractions like the Apartheid Museum and Constitution Hill, reflecting its complex past and ongoing transformation.