The River Loire is the longest river in France, stretching approximately 1,006 kilometers (625 miles). It flows from the Massif Central in the south to the Atlantic Ocean in the west, passing through several regions, including Loire Valley, known for its picturesque landscapes and historic châteaux. The river plays a vital role in the local ecosystem and economy, providing water for agriculture and serving as a transportation route. The Loire Valley is also recognized as a UNESCO World Heritage site, celebrated for its cultural significance and biodiversity, making the River Loire an important natural and historical landmark in France.