Tarn (river) a mean flow of approximately . The Millau Viaduct spans the valley of the Tarn near Millau, and is now one of the area's most popular attractions. The tributaries of the Tarn include: The Tarn separates the Narbonne and Aquitaine basins. The Tarn passes through the following departments and towns: The Millau Viaduct, the tallest bridge in the world, carrying the A75 autoroute across the Tarn Gorge near Millau, opened in December 2004. The Tarn is famous for its brutal floodings, which are the most dangerous in Europe along with the Danube. The flooding of March 1930 saw the Tarn
Millau for over a century as the "capital of leather and glove" Millau is renowned for its activity tannery (leather gloves). The town is best known for its sheepskin gloves, for which it led the French fashion industry for two centuries. It gained the title of "City and Art Professions" in 2000. Agricultural production, including Roquefort cheese made from raw sheep's milk, is essential to the economic activity of the region are 43 farms in this town and their activities strongly shape the landscape. Since 1993, a series of four major night markets, organized by farmer-producers associated among Farmers of Aveyron,