The Pont du Diable on the Hérault River is one of many bridges in France with this name (it means Devil's bridge). Constructed by Benedictine monks in the first half of the 11th century, it provided a link between the abbey at Aniane and the Gellone Abbey at Saint-Guilhem-le-Désert. Though subsequently widened and raised several metres around 1770, it has retained its original shape. Vehicular traffic is now catered for by a newer bridge, from which splendid views may be had of the original bridge and an aqueduct that takes water to the vineyards of Saint-Jean-de-Fos.
The bridge has been listed by the French Ministry of Culture as a monument historique since 1935 and is listed as a UNESCO World Heritage Site as part of the World Heritage Sites of the Routes of Santiago de Compostela in France.
References:Trenčín Castle is relatively large renovated castle, towering on a steep limestone cliff directly above the city of Trenčín. It is a dominant feature not only of Trenčín, but also of the entire Považie region. The castle is a national monument.
History of the castle cliff dates back to the Roman Empire, what is proved by the inscription on the castle cliff proclaiming the victory of Roman legion against Germans in the year 179.
Today’s castle was probably built on the hill-fort. The first proven building on the hill was the Great Moravian rotunda from the 9th century and later there was a stone residential tower, which served to protect the Kingdom of Hungary and the western border. In the late 13th century the castle became a property of Palatine Matúš Csák, who became Mr. of Váh and Tatras.
Matúš Csák of Trenčín built a tower, still known as Matthew’s, which is a dominant determinant of the whole building.