La Calatravas Church as it is popularly known or Church of the Royal Conception of Calatrava Historically, it was part of the old convent of the Real Concepción of the nuns commanders of the Order of Calatrava.
The current church preserves a rich artistic heritage as a result of its history and at least two centuries of being one of the most important convents in Madrid.

It was the work of Friar Lawrence of Saint Nicholas, built between 1670 and 1678.

After the Confiscation of Mendizábal, the convent was left empty. A few years later, during the Democratic Sexennium, it was proposed to demolish the entire complex. The convent was demolished but the church was finally saved.
One of the most outstanding baroque churches in Madrid in the 17th century remained, although, after the disappearance of the convent, the building was surrounded by a cluster of later buildings that broke and distorted the aesthetic harmony of the temple, especially visible is the building of the Union and the Spanish Phoenix, the first skyscraper in Madrid, today Hotel Petit Palace Alcalá Torre.
Unlike many other churches, it did not suffer much in the Civil War, preserving its interior almost intact. Already in the 2000s, a major restoration was undertaken both on the outside of the building (roofs, cleaning of the facades and recovery of the original plaster) and on the interior, which was completely restored.

The general sobriety of the building stands out; the original severity of the exterior, only broken by simple moldings and plate decoration, which was radically transformed in the 19th century, when the king consort Francis of Assisi He had the entire exterior of the church decorated in romantic fashion, according to the architect's designs. Juan de Madrazo and Kuntz.
In this way, the main façade, on Alcalá Street, today presents a very ornate appearance, with pilasters, scallops, padding, sgraffito, all in a Neoplateresque style that contrasts shockingly with the architecture.
Omnipresent is the Calatrava Cross, very visible throughout the church.

The interior of the church is very bright and has great decorative exuberance. The main chapel space is perhaps the most outstanding part of the temple. Jose de Churriguera, in the second decade of the 18th century, created one of his most notable works here. The main altarpiece alone constitutes one of the peaks of Spanish Baroque, being a perfect example of the current called Exalted Baroque or churrigueresque.

A abrazo.