Johannesburg: share your tips with GuardianWitness or #GuardianJoburg Guardian Travel is producing a guide to South Africa's biggest city, Johannesburg – and we need your help to do it. We'd like you to tell us about the best museums and galleries, bars and cafes, the most interesting things to do and the insider tips … Read more on The Guardian This news item … [Read more...] about Johannesburg: share your tips with GuardianWitness or #GuardianJoburg – Johannesburg