The Río de la Plata is a large estuary located in South America, formed by the confluence of the Paraná and Uruguay Rivers. It serves as a natural border between Argentina and Uruguay and is one of the widest rivers in the world, measuring about 220 kilometers (140 miles) at its mouth. The estuary flows into the Atlantic Ocean, making it an important waterway for trade and transportation. The region around the Río de la Plata is rich in biodiversity and supports various ecosystems, including wetlands and estuarine habitats. Major cities, such as Buenos Aires and Montevideo, are situated along its shores, contributing to the area's cultural and economic significance. The river is also a popular destination for recreational activities like fishing and boating.