This river forms the boundary between Brazil and Argentina, which makes it a  significant part of the  geographical structure of  South America. These falls were discovered in 1541 by an explorer Álvar Núñez Cabeza de Vaca. The Iguazu Falls stretch 2.7 kilometres  in width and 82 metres in height. This makes the Iguazu Falls taller than Niagara Falls and twice as wide.  There are many things to do at the falls. We suggest  booking the "Iguassu Falls Day Tour from Puerto Iguazú with Waterfall Boat Ride" tour. The prive is expensive and your expirience is amazing. See the mighty Iguassu Falls from every angle of the Argentinian side on a full-day tour from Puerto Iguazú. You get to walk through the mist at the base of the fall and then follow the upper path for amazing panoramic views.