Built in 1557 and commissioned by the Viceroy of Valencia, the Castillo Fortaleza de Santa Pola stands as a Renaissance military fortress designed to protect the coast from Barbary pirate raids. Located in the center of Santa Pola on Spain's Costa Blanca, this stone structure features a distinctive square floor plan with corner towers and bastions named after royalty. Today, the fortress houses the maritime museum and fishing museum, where visitors can explore its arms courtyard, historic chapel of the Virgin of Loreto, and cistern, providing insight into both the castle's defensive heritage and the region's seafaring past.