Iguazú Tourist Corridor

Mercosul (South American free trade zone) nationals can enter Argentina in the area around Iguazú Falls for less than 72 hours without a visa. Most western European countries do not need a visa and, as of various decrees issued between 2016 and 2018, reciprocity fees for Americans, Australians and Canadians have also been suspended. Conversely, if you need a visa for Brazil, you will need it to visit the falls from Argentina, even on an organized day trip.