The museum is set in the 16th-century Castle Fortress, an example of Renaissance military architecture.
It has a monographic exhibition focusing on the history of Santa Pola, with six main themes: prehistory, the Iberians, Roman Portus lllicitanus, the fortification of the coast, fishing, and the salt beds. Some of the items on display are household goods such as looms, bodkins, adornments, amphorae and mosaics. Designed to be educational, the museum has high-technology systems including an audiovisual room showing a range of documentaries.
The ticket includes the visit to the Fishing Museum.