La Aripuca is a 17-metre wooden hut built from the trunks of 29 native Misiones hardwoods — every one of them salvaged from windfalls or logging waste in a small, deliberately educational project run by the Cebolla family since 1997. The name comes from the Guaraní word for a Guaraní bird trap, which the hut roughly resembles.
Inside is a small museum on the trees themselves — each labelled with its Guaraní and Latin name, its uses and its current conservation status — and a cafe in the surrounding garden serves yerba mate and homemade chipá. It is the most thoughtful and least kitschy of the Puerto Iguazú attractions outside the park.