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La Casita-Museo constitutes a unique and different space in which magic and culture coexist. It speaks to us of an immense value, as Father Coloma wanted to make clear: human brotherhood. And it makes it possible for children and adults to get to know and get closer to this Madrilenian loved by all, generating the illusion of those who visit it.

The CMRP welcomes all the visitors from multiple origins, national and international, families and school groups who come to meet and meet this unique character, from Madrid and universal.

          _cc781905-5cde-3194 -bb3b-136bad5cf58d_           _cc781905 -5cde-3194-bb3b-136bad5cf58d_    The Museum: “Small on the outside, big on the inside, like its owner”.










We will be able to see his family home, a large box of Huntley cookies, in which he lives together with his wife Katalina and their children Adelaida, Elvira and Adolfito; the mailbox through which boys and girls communicate with Pérez; a partial reproduction of Mouse's office in human size...


 … We will see scenes that recreate the story told by Coloma: the extraction of Bubi's tooth by the palace doctors; moment in which he, with the help of his mother the queen, writes the letter to Ratón Pérez, scenes of the meeting between the two and when he is transformed into a mouse by, in the words of Coloma, "a wonderful prodigy, that no one until today has been explained."


We find objects belonging to Bubi such as his milk tooth, his horse Palomo or his collection of clowns and harlequins, the poetry of Gloria Fuertes, the presence of D. Jacinto Benavente and D. Benito Pérez-Galdós, the tribute to a crown...








We will also be able to learn about other traditions in the collection and analysis of milk teeth. Characters with the same mission in other parts of the world, belonging to the same international network: Tooth Fairy (Anglo-Saxon world),







We come from the first written document in which Ratón Pérez appears as a reference and protagonist published in 1902 and written by Luis Coloma Roldán.

 La Casita-Museo de Ratón Pérez opened its doors in 2008 at the request of the rodent itself and with such honorable permission and recognition  so that all children who want to know more about him can approach.

In 2003, the Madrid City Council, at the hands of its then mayor, Jose María Álvarez del Manzano , placed the first commemorative plaque dedicated to a character of these characteristics on the façade of the building in which, according to Luis Coloma, in his story Ratón Pérez, Ratón lived and lives at C/Arenal number 8 in Madrid.


Shortly before, representatives of the  "Association of friends of children's and young people's books" did their honors, offering the smallest statue in the world, that of Ratón Pérez, located in the Hall of the building.

Due to the curiosity of the public and the interest aroused, in 2011 the Casita-Museo was significantly expanded to the size it now has, thus giving space to all the objects and memories that Pérez has and that he so humbly lends to the world.

A tribute to our dear friend well deserved to "enjoy" a Museum House.

It is located on Calle del Arenal 8, in the center of Madrid, where Coloma institutionalized his residence more than 110 years ago, in the Carlos Prast Pastry Shop, inside a box of cookies.

Huntley. It couldn't be anywhere else in the world.

It is the HEART of a large project recognized by the Madrid City Council, by means of a commemorative plaque on its façade; the only one awarded to a fictional character. “Here I lived…”


The Prast confectionery, where RP lived, was "Provider of the Royal House" since the time of Elizabeth II. Don Carlos Prast, Jr., became Mayor of Madrid, as well as President of the Chamber of Commerce. He shared fans and tennis matches with Alfonso XIII.




The origin of the Pérez Mouse is found in the magical beliefs of primitive rural societies. The popular tradition goes back at least to the Middle Ages



Luis Coloma Roldán (Jerez de la Frontera, January 9, 1851-Madrid, June 10, 1915), known as Father Coloma, was a Spanish writer, journalist and Jesuit.  Student of the Naval school, studied law at the University of Seville. He combined his work as Spiritual Advisor to the Crown and member of the Royal Academy of Language.  As an author of children's literature, he wrote, among other works, “RATÓN PÉREZ”.

At the end of the 19th century, Father Coloma was asked by the court to write a story when King Alfonso XIII fell due to the loss of one of his milk teeth at the age of 8 years. The Jesuit came up with the story of “Ratón Pérez”, starring King Buby, which was what Queen María Cristina called her son. Since then, "the secret" of where the famous rodent lived and lives has been revealed.

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M-Placa original por Ayuntamiento de Mad
M-Manos Bronce-homenaje a Luis Coloma-Es

"PÉREZ MOUSE", the story.

Inspired by ancient oral stories, with which he gave the child king Alfonso XIII, on the occasion of the loss of one of his milk teeth, at the age of eight.

  • Gives a new dimension to the Character. First text dedicated to him.

  • Personal gift for His Majesty the King D. Alfonso XIII.

  • Ethical values: defends human brotherhood, all of us – rich and poor – are brothers.

  • Dedicated to all children. En su preámbulo, escribe:         _cc781905-5cde-3194-bb3b- 136bad5cf58d_           _cc781905-5cde- 3194-bb3b-136bad5cf58d_            



          _cc781905-5cde-3194 -bb3b-136bad5cf58d_           _cc781905 -5cde-3194-bb3b-136bad5cf58d_

  • Fiction complicit with reality:

- RP goes to the Palace to leave a present for King Buby. Coinciding with the name with which the Regent Queen Maria Cristina of Austria affectionately called her son, King Alfonso XIII, in private.    

- Situates the action in specific places in the town of Madrid at the time: Arenal street, Jacometrezo street, Prast bakery,...


  • The handwritten text, bound in green leather, is kept in the Security Chamber of the Royal Library of the Royal Palace of Madrid.


  • It is published for the first time in 1902; first independent edition in 1911, addressed, again, to Alfonso XIII, containing a dedication to HRH the Prince of Asturias; with illustrations by Pedrero. Its facsimile can be purchased at the Casita-Museo.




English adaptation in 1915; North American edition in 1950; in Japan it has been reissued continuously since 1953; etc.

The delivery includes two books that correspond to the story itself and a study on the work and the author.

In addition, children's adaptations have been carried out due to the literary complexity of the first work. These adaptations are found exclusively in the Casita-Museo de Ratón Pérez.

Do you want to know our children's adaptations of Coloma's book?

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