Eco Park Porto da Ilha is a state conservation area and riverside recreation site situated on the Rio Formoso, about 12 km from the town of Bonito.

It serves as both a balneário — a swimming and leisure park with decks, waterfalls, and bathing areas — and the embarkation and disembarkation point for inflatable boat tours on the river.

The signature activity is a roughly 5 km float downstream in rubber rafts holding up to 12 passengers, passing three waterfalls and one set of rapids with a stop for swimming. Trained guides accompany each trip.

Along the route, visitors commonly spot birds, monkeys, and — particularly between June and September — anacondas basking in the sun, making the journey as much a wildlife experience as an aquatic adventure.