Castell de la Trinitat stands as an iconic five-pointed star fortress dominating the Gulf of Roses. Built on orders from Emperor Charles V and completed in 1551 by Spanish engineer Luis Pizano, this 18th-to-20-meter-high structure represents Renaissance military innovation at its finest. The thick-walled fortress was designed to garrison approximately 350 soldiers and served as a crucial defense partner alongside the Ciutadella de Roses. After nearly two centuries of dereliction, a comprehensive 2-million-euro restoration between 2002 and 2010 returned the castle to public view, establishing an on-site museum that opened in September 2010, making it an outstanding example of preserved coastal fortification architecture.
