Museum of neoclassical style built in 1857, in the building of Les Casotes, in Sant Carles de la Ràpita. The building includes a ground floor and a first floor. In the ground floor there is the exhibition Espai Arbó, dedicated to the writer Sebastià Juan Arbó. In this floor are organized temporary activities. In the first floor there are two permanent exhibition spaces: "La Mar de l'Ebre: from Cap de Terme to Sòl-de-riu" and "Les Terres de l'Ebre, land of fishermen and sailors". These summarize the rich biodiversity, the importance and danger of navigation and the ways of life of the coast located around the mouth of the Ebro. The museum is the starting point for various routes and itineraries guided by the population.