Bolivia

Maria didn't need a visa with a French passport but I did with a South African one. The rules have changed recently so most guidebooks say South Africans don't need one. If you're unsure, check.
We organised the visa in Puno. We had taken the bus on a Friday from Cuzco and the visa office was meant to be closed by the time we arrived but I tried my luck. The security guard let me in and I told them we wanted to go to Bolivia on Sunday and asked very nicely for a visa. The consul obliged and I had to go downstairs and get a photocopy of my passport and pay US$30 but easily sorted out. 30 days stamped in passport.