Of Roman origin, the city of Valencia achieved notoriety in the Islamic period of Taifas under the control of Abd Al Aziz. Under his orders, a new defensive wall was built, the remains of which are still preserved in Ciutat Vella. El Cid Campeador took the enclave in the early eleventh century, before falling back into the hands of Almoravids and Almohads, until its conquest by James I in 1238. From the Islamic period, a surprising irrigation network of irrigation ditches and weirs has been preserved, as well as a suggestive gastronomic and toponymic legacy.