<P> The Iguazu Falls , Iguazú Falls , Iguassu Falls , or Iguaçu Falls ( Spanish : Cataratas del Iguazú ( kataˈɾatas ðel iɣwaˈsu ) ; Guarani : Chororo Yguasu ( ɕoɾoɾo ɨɣwasu ) ; Portuguese : Cataratas do Iguaçu ( kataˈɾatɐs du iɡwaˈsu ) ) are waterfalls of the Iguazu River on the border of the Argentine province of Misiones and the Brazilian state of Paraná . They are the largest waterfalls system in the world . The falls divide the river into the upper and lower Iguazu . The Iguazu River rises near the city of Curitiba . For most of its course , the river flows through Brazil ; however , most of the falls are on the Argentine side . Below its confluence with the San Antonio River , the Iguazu River forms the boundary between Argentina and Brazil . </P>
where is the iguazu falls located on a map
on the border of the Argentine province of Misiones and the Brazilian state of Paraná