9 Fascinating Facts About Iguazu Falls

Iguazu Falls is one of South America’s most remarkable natural attractions. Located on the border between Argentina and Brazil, the waterfall system combines immense scale, dense subtropical rainforest, exceptional wildlife, and viewpoints that allow visitors to experience the falls from several perspectives.

Here are nine facts that explain what makes Iguazu Falls so special and internationally famous.

1. Iguazu Falls Is Shared by Argentina and Brazil

The waterfall system lies along the Iguazu River, between the Argentine province of Misiones and the Brazilian state of Paraná.

Each country protects its side within a separate national park:

• Iguazú National Park in Argentina.
• Iguaçu National Park in Brazil.

Although the parks protect the same natural attraction, they have independent entrances, tickets, walking circuits, and visitor services.

The Argentine side offers a longer and more immersive visit, with walkways above and beside several waterfalls. The Brazilian side has a shorter main circuit and provides broader panoramic views of the complete system.

Visiting both parks is the best way to appreciate the destination from every angle. See more about Iguazu Falls Brazil and Iguazu Falls Argentina here.

2. The System Has Around 275 Waterfalls

Iguazu Falls is not a single waterfall. It is a vast system traditionally described as comprising approximately 275 individual waterfalls and cascades distributed along the Iguazu River.

Its appearance changes according to the river level. During periods of high water, some individual drops appear to merge into larger curtains. When the level is lower, the separate channels, rocky formations, and forested islands become easier to distinguish.

This constantly changing landscape means the falls can look noticeably different from one visit to another.

3. Iguazu Falls Stretches for Almost Three Kilometers

The waterfall system extends for approximately 2.7 kilometers, making it one of the widest and most spectacular waterfall formations in the world. Some sections reach around 80 meters in height.

Much of its visual impact comes from the combination of numerous cascades, rapids, forested islands, and permanent clouds of mist rather than from one uninterrupted drop.

The Brazilian viewpoints are particularly effective for appreciating this width, while the Argentine walkways allow visitors to explore individual sections at closer range.

4. Iguazú National Park Is a UNESCO World Heritage Site

Iguazú National Park on the Argentine side was established in 1934 and covers approximately 67,700 hectares. UNESCO inscribed it as a World Heritage Site in 1984 in recognition of its exceptional scenery and biodiversity.

The neighboring Iguaçu National Park in Brazil received its own UNESCO designation in 1986. Together, the two protected areas preserve one of the most significant remaining sections of the Interior Atlantic Forest.

The destination is therefore important not only because of its waterfalls, but also because of the threatened subtropical ecosystem that surrounds them.

5. It Is One of the New7Wonders of Nature

Iguazu Falls was selected as one of the New7Wonders of Nature through an international public-voting campaign.

The preliminary results were announced in November 2011, and Iguazu Falls was later officially confirmed as one of the winners. Argentina and Brazil shared the candidacy, reflecting the cross-border nature of the destination.

This recognition is separate from its UNESCO World Heritage status. UNESCO evaluates sites according to natural and cultural heritage criteria, while New7Wonders was an independent global voting initiative.

6. The Name Iguazú Means “Big Water”

The name Iguazú comes from Guaraní and is commonly translated as “Big Water.”

It is generally associated with the words y, meaning water, and guasu, meaning big or great. The name accurately reflects the extraordinary scale of the river and waterfall system.

Guaraní culture has deep historical roots in the region, long predating the creation of the national parks and the development of Iguazu Falls as an international tourist destination.

7. The Surrounding Forest Has Exceptional Biodiversity

The waterfalls are surrounded by the Selva Paranense, a subtropical rainforest that forms part of the Interior Atlantic Forest.

The protected environment supports approximately 2,000 plant species, around 400 bird species, and a wide variety of mammals, reptiles, amphibians, fish, and invertebrates.

Animals that visitors may encounter near the public areas include:

• Toucans.
• Coatis.
• Monkeys.
• Butterflies.
• Tegus.
• Caimans.
• Turtles.

The wider forest is also home to tapirs, ocelots, giant anteaters, and jaguars, although these larger and more elusive animals are rarely seen along the tourist circuits.

One of the species most closely associated with the falls is the great dusky swift. These birds can fly through the mist and nest on wet rock walls behind the falling water.

Visitors should never touch or feed wildlife. Feeding animals changes their natural behavior and can lead to bites, scratches, and conflicts with people.

8. Devil’s Throat Is Its Most Powerful Section

Devil’s Throat, known in Spanish as Garganta del Diablo and in Portuguese as Garganta do Diabo, is the most concentrated and dramatic section of Iguazu Falls.

Several channels of the upper Iguazu River converge before dropping into a deep, semicircular chasm. The force of the water produces enormous clouds of mist and a continuous roar that can be heard before reaching the viewpoint.

On the Argentine side, visitors reach the Devil’s Throat balcony by taking the ecological train and following a long, flat walkway across the upper river. The final platform stands directly above the main drop, creating a much closer and more immersive experience than a conventional panoramic viewpoint.

The volume of water changes considerably throughout the year. After heavy rainfall, the falls may become more powerful, but the additional mist can also reduce visibility.

9. You Can Experience the Falls From Several Perspectives

Several experiences are offered to explore Iguazu Falls from different perspectives.

On the Argentine side, visitors can walk along the Upper and Lower circuits, travel through the forest aboard the ecological train, and approach Devil’s Throat from above.

The Brazilian side provides the most complete panoramic view of the waterfall system from across the river. Its main walkway gradually reveals the scale of the falls before reaching a platform surrounded by spray.

Additional experiences may include:

• Boat rides near the lower cascades.
• Helicopter flights from the Brazilian side.
• Birdwatching and rainforest activities.
• Full moon visits on selected nights.
• Guided tours combining both national parks.

Each experience reveals a different aspect of the destination. The walkways show the details and force of individual waterfalls, while the panoramic viewpoints reveal the scale of the complete system.

Why Is Iguazu Falls So Special?

Iguazu Falls stands out because of the combination of its size, number of cascades, rainforest setting, biodiversity, and variety of viewpoints.

It is not only a spectacular waterfall destination. It is also part of an extensive protected ecosystem shared by two countries and recognized internationally for both its natural beauty and conservation value.

For the most complete experience, visitors should explore the Argentine and Brazilian sides. Each offers a distinct perspective, and together they reveal why Iguazu Falls is considered one of the world’s most extraordinary natural attractions.