The Causses is a limestone plateaux with green fertile canyon valleys. It is at the southern end of France's Massif Central. It is a vast and largely unspoiled territory with amazing scenery. For us there were 3 highlights: Millau Viaduct (world's highest bridge), Gorges du Tarn, and the Roquefort cheese caves. Millau Viaduct Loving most bridges and being fans of Lord Norman Foster's other architecture (British Museum, Hong Kong Airport, Bundestag in Berlin) we were excited to visit the world's tallest bridge in Millau. It has a structural height of 343m and is a 7 pylon multi-span bridge. It is not only beautiful with its needle pylons reaching for the sky but is also considered an engineering marvel. Gorges du Tarn A canyon formed by the Tarn River near the beginning of its journey to the Atlantic Ocean is nearly 53km long and 400-600m deep. Over millennia the river has eaten its way through the limestone plateau. The gorges are flanked ...