Iguazu Falls is the waterfall system on the Argentina–Brazil border made up of roughly 275 separate falls and cascades.
The falls lie on the Iguazu River shortly before it joins the Paraná River. Most of the cataracts are in Argentina’s Iguazú National Park, while Brazil’s Iguaçu National Park preserves the panoramic approach and viewpoints. The river is divided by islands into numerous channels, creating the system’s fragmented appearance.
The largest section is the Devil’s Throat, a long, U-shaped chasm where many channels converge. Water levels and the exact number of visible falls vary with rainfall and river flow, so descriptions commonly give an approximate total rather than a fixed count.
Iguazu is sometimes compared with Niagara and Victoria Falls, but the three landmarks differ in structure: Iguazu is especially notable for its width, islands and many separate cataracts.