What makes Iguazu Falls worth the trip?
When Eleanor Roosevelt first saw Iguazu Falls, she reportedly said "Poor Niagara" — and that reaction hasn't changed for the millions of visitors since. Straddling the border between Argentina and Brazil, the Iguazu Falls system stretches nearly 2.7 kilometers across and contains 275 individual cascades plunging up to 82 meters into the gorge below, all fed by the Iguazu River as it drops off the Paraná Plateau into subtropical jungle. The volume is staggering: 1.5 million liters of water per second during the rainy season, generating a permanent mist cloud visible 30 kilometers away and creating perpetual rainbows that arc across the canyon.
The Argentine side of the national park provides the most immersive experience. Three circuits of metal catwalks carry you above, beside, and into the falls: the Upper Circuit offers bird's-eye views looking down at the cascades; the Lower Circuit takes you to the base, face-to-face with curtains of falling water; and the Garganta del Diablo (Devil's Throat) trail — a 1.1-kilometer boardwalk over the river — places you on the very lip of the most powerful cascade, where the roar obliterates conversation and mist soaks you within seconds. The surrounding Atlantic Forest is a biodiversity treasure: toucans, coatís, caimans, butterflies by the thousand, and the occasional jaguar print on muddy trails. A guide optimizes your route to avoid the worst crowds at each viewpoint and spots wildlife hiding in the canopy that most visitors walk right under. Combine a visit with a boat ride to San Martín Island or a sunset trip to Hito Tres Fronteras.