Diagonal Street
On this street in the city center, among stores selling traditional African fabrics and household appliances, you'll find African herbalists' shops purveying a mind-boggling array of homeopathic and traditional cures for whatever ails you. If you're lucky, a sangoma (traditional healer) might throw the bones and tell you what the future holds. This is also the site of the old Johannesburg Stock Exchange building (the modern version is in Sandton) and the so-called Diamond Building, resembling a multifaceted diamond. You'll get the most out of visiting Diagonal Street on a guided walking tour—Local Places has great curated tours with a wealth of knowledge about the city center.