The major river that flows through the capital of Hungary, Budapest, is the Danube River. The Danube is the second-longest river in Europe, flowing through numerous countries and serving as a critical waterway for trade and transportation. In Budapest, the river divides the city into two parts: Buda and Pest. The iconic Chain Bridge spans the Danube, symbolizing the unity of the two sides. The river significantly enhances the city's beauty and cultural significance, making it a popular destination for tourists.