Colonia Carlos Pellegrini is the main base for exploring the Iberá Wetlands — a small, unhurried village sitting directly on Laguna Iberá, the central lagoon of the wetland system. The village has a handful of posadas, restaurants, and tour operators, all oriented towards wildlife tourism. It is accessible via 120 km of road from the town of Mercedes: 40 km of tarmac, then 80 km of gravel road in generally good condition that can become challenging after heavy rain.
From Pellegrini, the lagoon is immediately accessible — boats depart from the village dock for morning and afternoon wildlife tours, and the floating islands visible from shore are themselves a habitat worth exploring on foot with a guide. The village has a visitor centre with natural history exhibits, and several operators offer horseback rides through the surrounding esteros for a different perspective on the landscape.