The idea of creating a museum in Valls goes back to 1909. From that time onwards, it has received donations and loans from patrons such that it now holds a collection of over a thousand works of Catalan art from the last 120 years, considered one of the best in Catalonia.

Located in the Casa de Cultura since 1970, its premises were completely refurbished in 1993. Taking a chronological journey through the collection, there are examples of Realism (F. Galofré Oller, Josep Marqués, Baldomer Galofré) and Modernism and Impressionism (Isidre Nonell, Eliseu Meifrén, Enric Galwey, Joan Llimona, Francesc Vayreda) and Noucentisme (Joaquim Sunyer, Enric Casanovas). One of the jewels of the museum is the collection of paintings, sculptures and jewellery by Manolo Hugué, linked to the early avant-garde.

The museum also has a good representation of the post-war artists (Josep M. Mallol Suazo, Josep Amat, Joan Miró, Antoni Tàpies, Joan Brossa, Apel·les Fenosa, Modest Cuixart).

Notable is its photography collection, thanks to the loan made in 1998 by the photographer Francesc Català-Roca. It is completed with works by Pere Català Pic, Pere Català Roca, Colita, Xavier Miserachs, Leopoldo Pomés and Oriol Maspons.

In addition to the art collection, the Museum of Valls also holds an important archaeological collection focused on the Iberian world, available to researchers, and an ethnographic collection of the castellera (human towers) which will become part of the future Museu Casteller de Catalunya (Human Tower Museum of Catalonia).