The Museu de la Fotografia de Castelldefels is a free museum dedicated to the art and history of photography. It features a collection of photographs, cameras, and other photographic equipment that highlight the evolution of photography over the years. Visitors can explore various thematic exhibitions, learn about different photographic techniques, and discover the works of renowned photographers. The museum also offers workshops, lectures, and photography competitions, making it a hub for photography enthusiasts in Castelldefels.