History
The sun rising over the Paraná River, from the northeast side of Rosario, Argentina
The first European to travel the "Father of the Waters" (from the Guaraní language) was Sebastian Cabot in 1526.
In 1525 Cabot assumed charge of a three-ship Spanish expedition intended to develop trade with the Orient. However, he diverted the expedition to the South American continent due to reports of fabulous wealth in the Río de la Plata region. After three years of what was considered fruitless exploration, he returned to Spain where he was judged responsible for the failure of the expedition, and was banished to Africa.[1]
The Paraná soon after became the principle explorers' route into the interior of the South American continent.