In Hidden Johannesburg, Paul Duncan provides a snapshot of 28 of the city's architecturally and culturally significant buildings, alongside superb photography from Alain Proust. Some date from the early 20th century, when Johannesburg was transforming itself from mining camp to modern metropolis. Others speak to the influences that shaped the city: cultural, ethnic, historical, religious and commercial. There are churches and cathedrals, synagogues...