Introduction to Iguazu Falls: Iguazu Falls is located on the Iguazu River at the junction of Brazil and Argentina. It was formed 120 million years ago. It is the widest waterfall in the world and one of the five largest waterfalls in the world. one. The Great Falls consists of 275 waterfalls. The largest waterfall falls 90 meters and has a flow rate of 1,500 cubic meters per second. It is called the "Devil's Throat". Three-quarters of the falls are in Argentina, but they are even more spectacular from the Brazilian side. In 1984, Iguazu Falls was listed as a World Natural Heritage by UNESCO. On November 12, 2011, the "New Seven Natural Wonders of the World" was announced, and Iguazu Falls was included on the list.