ITR4756209: Le canal du Midi - Relais de Pigasse. At 60 years old, under Louis XIV, engineer Pierre Paul Riquet embarks on an extraordinary adventure, connecting the Garonne to the Mediterranean with the technical and topographical means of the 18th century. The Midi Canal will take 15 years of work to dig and feed a 240 km long artificial stream. Photography 2005 / Bridgeman Images