The semicircular waterfall at the heart of Iguazú National Park is some 80 m high and 2,700 m in diameter and is situated on a basaltic line spanning the border between Argentina and Brazil. Made up of many cascades producing vast sprays of water, it is one of the most spectacular waterfalls in the world. The surrounding subtropical rainforest has over 2,000 species of vascular plants and is home to the typical wildlife of the region: tapirs, giant anteaters, howler monkeys, ocelots, jaguars and caymans.
Located in Misiones Province in the Northeastern tip of Argentina and bordering the Brazilian state of Paraná to the north, Iguazú National Park, jointly with its sister park Iguaçu National Park in Brazil, is among the world’s visually and acoustically most stunning natural sites for its massive waterfalls.
Across a width of almost three kilometres the Iguazú or Iguaçu River, drops vertically some 80 meters in a series of cataracts.
The river, aptly named after the indigenous term for "great water" forms a large bend in the shape of a horseshoe in the heart of the two parks and constitutes the international border between Argentina and Brazil before it flows into the mighty Paraná River less than 25 kilometres downriver from the park.
Large clouds of spray permanently soak the many river islands and the surrounding riverine forests, creating an extremely humid micro-climate favoring lush and dense sub-tropical vegetation harbouring a diverse fauna.
Iguazú National Park, together with the contiguous World Heritage property of Iguaçu National Park in Brazil and adjacent protected areas, forms the largest single protected remnant of the Paranaense subtropical rainforest, which belongs to the Interior Atlantic Forest.
The rich biodiversity includes over 2000 species of plants, 400 species of birds and possibly as many as 80 mammals, as well as countless invertebrate species.