This house of ends of the 19th century was the residence of the astronomer Ramon M ª Aller Ulloa who was born in Filgueiroa Mainhouse (Lalín) in 1878. There, at the beginning of the 20th century, it is possible to say that he began the astronomic investigation in Galicia. At house´s gallery, Ramon Aller did first observations of Mercury, the Sun, eclipses, double stars or aspects of planets. After this, he built two wooden stands in garden (1912-1917) to work about these tasks. In the year 1923 he did plans of a new construction with dome, which was inaugurated in the following year, creating by this way the first astronomic observatory of Galicia.
The house was acquired by town hall for being the Illustrious Children Museum of Lalín that was inaugurated in 1989.
In the ground floor of the building we find, permanently, illustrious Mr. Ramon M ª Aller´s office. This room, once in the past, was a court that was surrounding the house, nowadays, with the attached space, it receives temporary exhibitions of art.
The first plant is dedicated to the painter and illustrious “Jose Otero Abeledo Laxeiro”, where we can permanently contemplate several works of him. He was one of the biggest artists innovators of Galician historic avant-garde.
Outdoor, we find mentioned above astronomic observatory.
Museum possess a wide programming of cultural events, as one of the most important, “Laxeiro Painter Biennial Art” that is celebrated since the year 1993.