Residents have been asking me over the years about the Canal du Midi, so this should answer any questions on it.
Built in the 17th Century, this tranquil, tree-lined canal meanders through the French countryside from the Garonne River to the Étang de Thau on the Mediterranean, which means it goes from one sea to the other for 240 kms. It was made a UNESCO World Heritage Site in 1996.
You can find a lot more about the canal on Wikipedia.
Also, to answer a question I'm often asked- you can:
Toulouse, but down here everyone calls it the Canal du Midi):
|The Canal du Midi|