The Iglesia de la Asunción was built in the Gothic-Mudéjar style and construction began in 1525. It consists of three 16th-century naves with pointed arches over octagonal pillars that end in a Mudéjar roof with a decoration that is still preserved under the 18th-century Baroque vault.
There is also a museum displaying numerous silverware articles, the oldest of which are from the 16th century, featuring Renaissance paxes and a custodia from 1589, a golden altar set and enamels donated by the Archbishop and Viceroy Caballero y Góngora in 1794.
The building that remains today was refurbished between 1743 and 1747, and during the building work the original Gothic arches with groin vaults were covered over and an oval dome was created in front of the high altar with semi-circular arches and new adornment with plasterwork moulding. This great work has been attributed to Jerónimo Sánchez de Rueda.