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
Richard de Millau the investiture quarrel between the papacy and the Emperor of the Holy Roman Empire between 1075 and 1122. Much of which revolved around the Provençal lands in the Kingdom of Burgundy, attached to the Holy Roman Empire. Born about 1052AD into an extremely powerful house at the time. His family were of viscounts of Millau, and their actions involved the continuity of power strategies between the various aristocratic families of France. He was the fourth child of Richard II (? - 1051), Vicount de Millau (1023) and his wife Gévaudan. His brother Bernat had been abbott of abbé de Saint-Victor