Iguazu Falls, in Iguazu River, are one of the world’s largest waterfalls. They extend over 2,700 m (nearly 2 miles) in a semi-circular shape. Of the 275 falls that collectively make up Iguassu Falls, “Devil’s Throat” is the tallest at 80 m in height. Iguazu Falls are on the border between the Brazilian state of Paraná and the Argentine province of Misiones, and are surrounded by two National Parks (BR/ARG). Both are subtropical rainforests that are host to hundreds of rare and endangered species of flora and fauna.