Argentina's largest national park, located in the province of Corrientes, protects the world's second largest wetland after the Pantanal in Brazil. There is no large river here, but a maze of ponds, swamps, streams, forests and wet meadows irrigated only by rain. This ecosystem, as precious as it is complex, is home to remarkable wildlife that you can observe from a boat, on foot or on horseback, and preferably with a guide. Don't forget your binoculars!