The Millau Viaduct is the world's tallest bridge: 2,460 metres long, with seven slender concrete pylons supporting a steel deck more than 270 metres above the bed of the Tarn. The tallest pylon, with its mast, reaches 343 metres — taller than the Eiffel Tower. Designed by the British architect Norman Foster with the French engineer Michel Virlogeux, it opened in 2004 and replaced one of the worst traffic chokepoints in France.
The bridge is most rewarding viewed from below. The Aire du Viaduc on the A75 has an exhibition, a café, and walking paths to lookout points. For a free, less crowded view, drive into the valley on the D992 toward Saint-Georges-de-Luzençon or take the short footpath from the village of Peyre, a clifftop hamlet upstream that looks straight up at the deck. Photographers do well at dawn and dusk, when the pylons catch the light and the valley below is often filled with mist.