Editor's note: No matter how much Brazil and Argentina might, um, dislike each other in football and a couple of other areas, they share one of the most beautiful rivers and waterfall systems on the planet. So let's all get along by focusing on these spectacular images of Iguazu Falls, shall we? On the border of the Argentine province of Misiones and the Brazilian state of Paraná, together these falls make up the largest waterfall in the world. And we would say the most beautiful as well! Take a look at this great collection and choose your fave today!