The Santa Marta Lighthouse Museum, which is right next to Casa de Santa Maria, occupies the former fort and the lighthouse with the same name. The whole complex was converted into a leisure and cultural centre, although the lighthouse is still part of the coastal signalling system. The museum offers an overview of lighthouses in general, plus specific exhibits on such themes as lighthouses in Portugal and the work of the lighthouse keeper, amongst others. Visitors can also enjoy the documentary film: Lighthouses of Portugal. Five Centuries of History.