The Iguaçu Falls stretches over 2 miles across Brazil and into the Iguazú National Park in Argentina. One of the world's oldest and largest waterfalls, the spray from the 2,700m drop creates a cloud-like atmosphere where animals and plant-life thrive. While this is a perfect vacation spot for bird lovers to spot over a hundred of species, nature lovers are delighted to find howler monkeys, jaguars, giant anteaters, and tropical flora and fauna.