Madrid’s secrets: where does Ratón Pérez hide and where are his dental treasures?

The Casa-Museo del Ratoncito Pérez is a small magical space in the centre of Madrid, where a fairy tale has found a real address. According to legend, this is where he settled, in a biscuit tin, after he was created for the young king Alfonso XIII, who had lost his first baby tooth. Inside, there are illustrations of the story, the mouse's "home," and touching details that delight both children and adults.

In an old gas outlet hides the tiny house of Ratoncito Pérez, created by the building's doorman, who has turned an imperceptible detail of the street into an urban surprise. This miniature space, no bigger than the palm of your hand, is decorated with humour and changes its decoration with the seasons, attracting both children and adults.

On San Vicente Ferrer, another tiny house of Ratoncito Pérez is hidden behind a miniature door and protected by a glass case. Inside is the mouse's home, recreated in full detail, with miniature furniture and lovely accessories, as if they had come straight out of a storybook.

At one of the entrances to the Banco de España metro station, a small door is hidden: the "secret entrance" of Ratoncito Pérez to the metro. This tiny wooden door, with a semicircular top and a playful frame, became a favourite secret among children and was later officially restored by the metro. Now, little ones can imagine that through it, the mouse goes to collect baby teeth all over the city.

On Velázquez, next to the pavement, another house of Ratoncito Pérez is hidden, just below the dental clinic. Where else would he live if not near his "workplace"? Every detail of this tiny home is carefully thought out, and its decoration changes with the holidays, from Christmas to San Valentín.