The history of Iguazu Falls, located in Argentina's Misiones Province, is as captivating as its natural beauty. The falls, formed over 150 million years ago, are a result of volcanic activity and geological shifts, creating a complex system of cascades and islands. The name "Iguazu" comes from the Guarani words "y" (water) and "ûasú" (big), reflecting the grandeur of these falls.

In 1541, Spanish explorer Álvar Núñez Cabeza de Vaca was the first European to discover Iguazu Falls, describing them with awe in his travel accounts. Over the centuries, the falls have been revered by the indigenous Guarani people, who consider them a sacred site.

The region surrounding the falls remained largely untouched until the 20th century, when efforts to preserve its natural beauty began. In 1934, Iguazu National Park was established in Argentina, protecting the falls and their surrounding rainforest. The park was later declared a UNESCO World Heritage site in 1984, recognizing its ecological significance and stunning landscapes.

Today, Iguazu Falls is a major tourist destination, attracting millions of visitors annually. The falls continue to be a symbol of natural wonder and cultural heritage, offering a glimpse into both the Earth's geological history and the rich traditions of the indigenous peoples who have long revered them.