The church has a richly decorated façade, with six smooth columns supporting an entablature, with animals, grotesque figures and vegetables, and has a large rose window. The main portal has a pair of Corinthian columns and the coats of arms of Philip III of Spain, Mary of Enghien and Walter VI of Brienne, while on the side portals are those of the Celestines.
The church boasts a richly decorated exterior with six smooth columns supporting an entablature adorned with animals, grotesque figures, and vegetables. A large rose window graces the facade. The main entrance features Corinthian columns and coats of arms of Philip III of Spain, Mary of Enghien, and Walter VI of Brienne. Side entrances display the coats of arms of the Celestines.