Ramón de Pignatelli was an "enlightened" man. He was prime minister in the 18th century. The works for the irrigation system were started in 1738, but didn't go very fast until Pignatelli was in charge. They got as far as Zaragoza in 1786, commemorated by the "unbelievers' fountain"; nothing to do with religion but to celebrate a work of engineering delayed for a couple of centuries and which some people believed would never bring the water to Zaragoza.
