One of Shanghai's most fascinating museums is hidden in the basement of a French Concession high-rise. Yang Pei Ming started collecting Maoist-era (1949–1979) propaganda posters in 1995—first as a hobby, and then to preserve these important historical and cultural relics. (The Chinese government destroyed many old posters for political reasons.) Thanks to Ming's diligence, the museum has nearly 6,000 originals you won't see anywhere else, from woodblock prints by Chinese autoworkers to intricate Shanghai Lady cigarette ads and neon-red armbands. The gift shop sells large and small reprints as well as postcards and kitschy souvenirs.