Close to Gran Vía, in the Malasaña neighborhood, you can find this church built between 1914 and 1917 by Francisco García Nava. It is famous for its exterior that combines dfferent styles: neo-Gothic, neo-Mudéjar and neo-Nazarí. In 1994 it was declared Cultural Heritage Monument.

The church was built at the site of the Hospital de la Buena Dicha founded in 1564 by Brother Sebastián de Villoslada, abbot of the parish and the San Martín monastery. Behind it there is a small cemetery of the same name. During the May 2nd uprising, the hospital cared for several wounded and some of the heroes of the uprising were buried there, like Clara del Rey. At the end of the 19th century, the cemetery, the hospital and its church were torn down.

The interior consists of a single nave, divided into two sections and a square plan apse covered by an octagonal ribbed dome with a central lamp. At the entrance, there is a raised choir loft, bathed in colour from the modernist-style stained glass windows. The Virgin of Holy Mercy is in one of the chapels along with a sculptural group from the first half of the 17th century.