Iguazu Falls vs Salar de Uyuni

Iguazu Falls

Iguazu sits in a subtropical rainforest climate — hot and humid year-round with no true dry season. Rainfall feeds the falls' volume directly: after heavy summer rains the cascades swell dramatically, sometimes closing the Devil's Throat boardwalk due to flooding. Winter (June-August) is milder and drier with the most comfortable conditions for walking the trails.

Salar de Uyuni

Salar de Uyuni has a highland desert climate with extreme temperature swings between day and night year-round. Days can be warm and sunny while nights drop well below freezing. The Altiplano receives most of its rainfall in the austral summer (December–March). There are two fundamentally different experiences: the wet season mirror effect and the dry season hexagonal salt crust.

Iguazu Falls

There is no regular public transit between the Argentine and Brazilian sides — the border crossing requires a bus or taxi via the Ponte Tancredo Neves bridge. Within the Argentine park, the Tren Ecológico (ecological train) connects the visitor centre to the Upper Circuit and Devil's Throat stops. Puerto Iguazú itself is small and walkable; taxis are cheap and plentiful.

Walkability: Puerto Iguazú town is small and walkable — the central area, main street (Avenida Córdoba), and waterfront can all be reached on foot from most hotels. The national park is also walk-friendly within its circuits, though the train is needed to reach Devil's Throat without a 3 km return walk on a service road.

Salar de Uyuni

Getting around the Salar de Uyuni region is almost exclusively by 4WD jeep tour. There are no paved roads on the salt flat or through the Eduardo Avaroa Reserve. Uyuni town itself is small and walkable. A handful of public buses connect Uyuni to other Bolivian cities, and a train line runs north to Oruro.

Walkability: Uyuni town is very walkable — it is a small grid-plan town and all main services are concentrated near the plaza. Outside town, walking is not practical: the Salar is enormous and featureless, and the reserves are at altitudes and distances requiring vehicular transport.