Since we were in Brazil, we decided to go visit the Iguazu Falls which are now part of the "New 7 Wonders of Nature". 80% of the falls are in Argentina and the rest are in Brazil. Most travellers recommend visiting the Brazilian side first to get a big picture of the falls before visiting the Argentina side. Due to rain, we had to go in the opposite order but we agree that seeing the Brazil side would probably have been better so that you get the overall view first and then get up close to them in Argentina. Although its true that the experience on the Argentinian side is longer and more complete, we found the overall view on the Brazilian side to be prettier.
Since we went on a sunny day, we also had the chance to see a lot of beautiful rainbows….. even some double rainbows!! :)