The locks at Fonsérannes
The 9 locks at Fonsérannes are in fact a single huge lock with eight basins and nine gates. This lock staircase, unique in its length of 312 metres and its height difference of 21.5 metres, was listed as a historic monument in October 1996, before the Canal du Midi itself was listed as a UNESCO World Heritage Site. As its dimensions did not allow large cargo barges to pass through, a slipway was built in 1984. A little too late, river transport of goods was already in decline, and it closed shortly after it began operating.