Invented by the region's Moorish rulers 1,200 years ago, Valencia's irrigation system is now a model for sustainable farming.

The whole process is held together by a unique social organisation that has been governing La Huerta for more than 1,000 years. The Tribunal de las Aguas de la Vega de la València, or Water Court of the Plains of Valencia, was established around 960 CE and as such is officially the world's oldest judicial body. The tribunal is made up of eight farmers, elected representatives of the communities that work off each of the main irrigation channels, who meet to settle disputes outside the doorway of Valencia Cathedral every Thursday at noon.