Canal du Midi
During the 17th century, this canal was dug out over more than 300 kilometres, to link the Garonne river to the Mediterranean Sea. It counts 328 water constructions (bridges, locks, aqueducts, tunnels, etc.). It is one of the best examples of water engineering. However, this technical masterpiece is perfectly integrated in the surrounding landscapes, where you can hike and bike in the shade of plane trees.