The Arús Library is a research centre specialising in contemporary social movements, particularly labour and Masonic movements, as well as documentary collections from the 19th and early 20th century.

Founded in 1895 through a donation by Rossend Arús, it is housed in his former residence. Inside, you can explore the writer's home, presided over by a replica of New York's Statue of Liberty, alongside reading rooms specially adapted to accommodate the library.

Today, the collection contains more than 80,000 volumes of books, serial publications, manuscripts, cartography, scores, microfilms and electronic resources, making it a leading reference centre for students and researchers interested in culture, history and society.