Even if you are short of your own means of transportation, the walk along the road from Carlo Pellegrini to the Natural Park Head Offices across the bridge over the Ibera' is really easy and enjoyable, especially at sunset. Once there, you can take the marked walk inside the small pocket of trees where a colony of howler monkeys lingers. They tend to show if you are silent enough. It is a small walk, but you will get fascinated by everything is around you. Totally free and one of the things you will remember!
Ibera Wetlands is a nature reserve 1000 km north of Buenos Aires. Swamp area of 13,000 km². With the richest fauna of all the country: Caimans, capybaras, swamp deer, howler monkeys, anacondas, maned wolves, armadillos, and greater rhea. All of them at sight for the visitors when doing excursions by boat on foot/horse back. A true paradise for nature lovers, birders, eco tourists and travellers looking for relax or the ultimate gaucho experience.