Iguazu Falls - Breathtaking, Spectacular, Stunning - words are not enough to describe this wonder of nature. Iguazu Falls / Cataratas del Iguazu / originate from the Iguazu river and are located on the border of Argentina and Brazil. Spectacular 275 individual waterfalls make Iguazu Falls one of the most impressive waterfalls systems in the world, voted as one of the new 7 Natural Wonders of the World. Whilst the majority of the falls are in Argentina (about 80%), a better