3rd Enlargement of al-Mansur (built 991-994), big in size but least ornate.
As a matter of fact, even the ogre colored elements in the arches are...
painted! In Spanish frequently spelled Almanzor but his full name was:
Abu Amir Muhammad ibn Abi Amir al-Mansur.

This part hosts also an exhibition of paintings and a collection of many original
archaeological artifacts. Models and video screens provide additional information.