Surpassing even the mighty Eiffel Tower in height, France’s Millau Viaduct holds the current title of the tallest bridge in the world. Rising up to 343 metres, the bridge opened in 2004 and straddles the Tarn Valley between Clermont-Ferrand and Béziers and Narbonne. For a different view of the statuesque structure, bridge enthusiasts can canoe underneath.