The highlight of any trip to Iguazu Falls is this massive complex of cascades that form a narrow chasm some 150m (500ft) long and 80m (262ft) high. The roaring falls and veils of spray create an awesome, full-sensory experience, which can be enjoyed from any number of vantage points.
The postcard-perfect view is from the Brazilian side, at the top of a 2km (1.2mi) trail ending in an elevator trip to the top of this natural wonder. To explore the falls up close, however, you'll need to take the Devil's Throat catwalks skipping across the deceptively calm waters atop the roaring falls. From there, you can watch as millions of liters of water drain violently into the river below.
Serious fans can splash out on a helicopter ride above the falls, available next to the visitors center on the Brazilian side.
It's well worth seeing the Garganta del Diablo from both the Brazilian and Argentine side of the falls. While the Brazilian vistas are open year-round, be aware that during rainy season—considered the best time to enjoy the falls, when they are at their most powerful—the Argentine trail to Devil's Throat can be closed.