Iguazú has amazing waterfalls. It can be seen from the Argentina site as well as from the Brazilian site. Puerto Iguazu is sure to be smaller and quieter (but no further from the falls) than Foz do Iguaçu, its Brazilian counterpart. Essentially a tourist town, it's focused on servicing the hundreds of thousands who come to wonder at the falls and national park. The tremendous amount of water (an average of 553 cubic feet per second) thundering down 269 feet, the tropical location and the sheer beauty that 'led Eleanor Roosevelt to say "Poor Niagara". Taller than Niagara Falls, twice as wide with 275 cascades spread in a horseshoe shape over nearly two miles of the Iguaçu River, Iguaçu Falls are the result of a volcanic eruption which left a large crack in the earth. The Iguaçu Falls are divided by various islands into separate waterfalls. Iguaçu Falls, called Foz do Iguaçu in Brazilian, and Cataratas del Iguazú in Spanish, lie on the Argentina - Brazil border and are a UNESCO World Natural Heritage Site.