The longest river in Europe is the Volga River. Flowing through central and southwestern Russia, it spans approximately 2,300 miles (3,700 kilometers) and has a significant impact on the region’s geography and economy. The Volga is crucial for transportation, irrigation, and as a source of hydroelectric power. It drains into the Caspian Sea and is surrounded by a diverse ecosystem and numerous cities, including Volgograd and Kazan. The river has deep cultural significance as well, influencing Russian folklore and traditions, and it is often referred to as the "national river" of Russia due to its historical importance.