The river that runs through the capital city of Hungary is the Danube. This significant river flows through many central and eastern European countries, but in Budapest, it showcases stunning views and historical architecture along its banks. The Danube plays an essential role in the city’s culture, serving as a vital waterway for commerce and tourism. It is also famous for its scenic river cruises, offering breathtaking views of landmarks such as the Buda Castle and the Parliament Building.