The Iguazu Falls was named after a Guarani word that means ‘big water.’ Geographically, the waterfalls serve as boundary for the Upper and Lower Iguazo as well as boundary between Brazil and Argentina. More importantly, Iguazu Falls is considered a major tourist attraction in the area, with numerous visitors taking the time and effort to view and perhaps compare it to the more famous Falls Niagara in the U.S.