Lalin Municipal Museum is dedicated to the priest and astronomer Ramon Maria Aller Ulloa who was born in Lalin in 1878. Visitors can see the instruments he used in his work as well as photographs and documents. There is also an exhibition of paintings by the artist Laxeiro, who is also from Lalin, and work by other Galician artists. There are also temporary exhibitions of sculpture and paintings. Near the museum is an observatory.
