"Poor Niagara!" These were the words Eleanor Roosevelt reportedly exclaimed when she visited Iguazu Falls for the first time. There are waterfalls and there are waterfalls. And then there’s Iguazú. A visit is a jaw-dropping, visceral experience, and the power and noise of the cascades live forever in the memory. The falls were established in 1984 as Natural World Heritage Site by UNESCO. Along with Nahuel Huapi National Park in Patagonia, Iguazu Falls is one of the most frequented tourist sites in Argentina, and for good reason. Visitors can enjoy the awe inspiring views of the falls along with tours, treks, and water sports at their base. An added benefit is the setting: the falls lie split between Brazil and Argentina in a large expanse of national park and rainforest.