From its exterior appearance stands the very classic facade of its church, flanked by two towers close to the Italian baroque taste. Columns and pillars establish a very attractive game, and is crowned by a pediment.
It is a building of Latin plant, of a ship, cruiser, apse and numerous lateral chapels. In its interior, stand the original ironworks and altarpieces of the XVIII century, as well as the canvas by Anton Rafael Mengs from its main altar. He also had several paintings by the Italian Giovanni Battista Tiépolo, which today are kept in the National Museum of the Prado of Madrid.
The convent stands in front of the Hospital of San Carlos. The church is now parish. The convent is a cloister of Franciscan Conceptionists.
The church is visitable.