Итайпу
The Mbaracayú (Maracaju) Biological Sanctuary is a binational reserve, located on the border between Paraguay and Brazil. It is one of the sites earmarked as ecological reserve by Itaipu Binacional, which operates the Itaipu Dam. Itaipu is the largest dam in production in the world, located between Paraguay and Brazil. It was founded in 1984 and is located at 300 km north of the city of Hernandarias. It has 1,356 ha. The refuge is managed by these two countries.