Itaipu Dam
The Guayra Waterfall (or Salto Canendiyu), called Salto das Sete Quedas by the Brazilians, on the Paraná River, almost to the crossing with the parallel 24ªS, was the natural navigation limit of the river. The current-day Paraguayan city called Salto del Guaira, and the Brazilian Guaira, indicate the approximate place where the beautiful and famous waterfalls are, covered by the waters of the Itaipu Dam since the 1980s.