The Museu de Castelldefels is a free museum located in the heart of Castelldefels. It showcases the history and culture of the town, with exhibits ranging from archaeological artifacts to contemporary art. The museum offers a fascinating insight into the development of Castelldefels over the centuries, highlighting its rich heritage and traditions. Visitors can explore various themed galleries, including sections dedicated to local history, art, and natural sciences. The museum also hosts temporary exhibitions, workshops, and educational programs for all ages.