
Asuncion, Paraguay
At some point if you're travelling in South America you're going to end up taking a long bus trip as buses are the commonest form of long-distance travel.
Latin America used to have a good rail network, largely built by British engineers in the nineteenth century. However it has now all but disappeared save for a few suburban networks and some tourist trains, such as the one from Cusco to Machu Picchu. And for some reason cheap air travel hasn't taken off here i...