Cataratas del Iguazu, a crescent of falls at the tri?border
Published on 09/14/2026 at 07:24 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Cataratas del Iguazu, known in English as Iguazu Falls, form a vast arc of waterfalls along the Iguazu River on the border between Argentina’s Misiones Province and Brazil’s Paraná State. The Argentine side lies near Puerto Iguazu and is protected within Iguazú National Park, which was created in 1934 and later recognised as a UNESCO World Heritage Site in 1984Iguazú National Park.
A river dropping off a basalt plateau
The Iguazu River rises in the Serra do Mar range near Curitiba in the Brazilian state of Paraná and flows westward across the Paraná Plateau before reaching the border with ArgentinaSerra do Mar range. At Cataratas del Iguazu the river cascades off the edge of this basalt tableland into the valley of the Paraná River, creating hundreds of individual falls arranged along a broad escarpmentbasalt plateau escarpment. The waterfall system extends for around 2.7 km (1.7 mi) along the river, forming a crescent of water broken by islands and rocky promontories.
The falls occupy a stretch of river roughly 25 km (about 14 mi) upstream from its confluence with the Upper Paraná River, close to the meeting point of Argentina, Brazil and Paraguayposition above the Paraná. Their setting on the northern edge of the Meseta Misionera, a basalt plateau in Misiones Province, gives Cataratas del Iguazu a distinct profile: a line of cliffs draped in water, fronted by spray and backed by dense subtropical forestMeseta Misionera plateau.
Argentina and Brazil sharing a World Heritage landscape
The waterfall complex straddles the international boundary, with Iguazú National Park on the Argentine side and Iguaçu National Park in Brazil both conserving the same stretch of river and forestparks on both sides. Iguazú National Park was inscribed on the UNESCO World Heritage List in 1984 as a natural site, recognising its ecological significance and the scale of the fallsUNESCO inscription 1984. Two years later, Iguaçu National Park in Brazil received its own inscription, making the shared waterfalls part of a transboundary World Heritage landscapepaired World Heritage sites.
On the Argentine side, Cataratas del Iguazu lie within a protected area that covers tens of thousands of hectares of the Selva Paranaense, a humid subtropical forest rich in birdlife, mammals and flowering plantsSelva Paranaense ecoregion. The park’s status as a World Heritage Site reflects both the spectacle of the falls and the surrounding ecosystem, where basalt outcrops, river islands and forest canopy frame views of the water. Together, the Argentine and Brazilian parks safeguard the waterfall system and the plateau landscape around it.
Circuits, viewpoints and the Garganta del Diablo
Near Puerto Iguazu, a network of walkways and trails allows visitors to approach different parts of Cataratas del Iguazu from the Argentine sideArgentine trail network. Elevated paths lead through forest to metal walkways over the river, where spray and sound grow stronger towards the main chasms. One of the most striking viewpoints is Garganta del Diablo, the “Devil’s Throat”, a deep, horseshoe-shaped cataract where multiple streams converge and plunge into a single gorgeGarganta del Diablo cataract.
The approach to Garganta del Diablo on the Argentine side uses an eco?train and an elevated walkway across river channels to reach the edge of the main dropeco?train access. Other circuits bring views from above and below different falls, including routes that descend closer to the river level and paths that cross islands within the cataract zone. From many points on these circuits, the broad curve of Cataratas del Iguazu becomes clear: a long front of water broken by cliffs and vegetation, extending across the river between Argentina and Brazil.
Visiting Cataratas del Iguazu: what travellers from Western Europe should know
- Cataratas del Iguazu lie in Iguazú National Park in Misiones Province, north?east Argentina, near the town of Puerto Iguazu and the tri?border with Brazil and Paraguay.
- The terrain around the falls includes forest paths, metal walkways and staircases; some circuits use elevated platforms over the river and approaches involve walking on uneven ground.
- The official language is Spanish and the currency is the Argentine peso.
- Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
Searching for Cataratas del Iguazu on social platforms
These links open searches for Cataratas del Iguazu on each platform.Frequently asked questions about Cataratas del Iguazu
Where are Cataratas del Iguazu located?
Cataratas del Iguazu are on the Iguazu River at the border between Argentina’s Misiones Province and Brazil’s Paraná State, near Puerto Iguazu in north?east Argentina.
What can visitors expect on a visit to Cataratas del Iguazu?
Visitors encounter a broad series of waterfalls framed by subtropical forest, reached by walkways and trails that bring views from above and near the river.
What makes Cataratas del Iguazu distinctive among waterfall landscapes?
The falls form a long, crescent?shaped front of water shared by two national parks, combining a basalt plateau edge, deep chasms such as Garganta del Diablo and surrounding rainforest.
