This group of four buildings admirably restored and harbouring a 16C Mudejar patio contains the cathedral museum that has objects, garments and various liturgical documents including a letter signed by St Teresa to the baby Jesus. Notice especially a monstrance in gilded silver created by Enrique Arfe known as the Custodia des Cogollo and the monstrance of a Million (18C), since it has, so they say, a million precious stones.