The fortress was built on the site of a former hermitage dedicated to the Holy Trinity, from which it derives its name.
The defensive design includes a 'star' configuration with thick walls that provided an impregnable platform for heavy artillery.
Its construction was managed by the military engineer Luis Pizaño.
The fortress remained an active military position for nearly three centuries until its destruction during the early 19th century.
The 2010 restoration utilized steel and glass walkways to provide safe access to the unstable 16th-century masonry.
The site played a critical role in the defense of the port of Roses, which was strategically vital for communication between Spain and Italy.
Castell de la Trinitat is a 16th-century artillery fortress perched on the Poncella point overlooking the Gulf of Roses. Commissioned by Emperor Charles V in 1544, it was constructed to defend the bay against pirate raids and French naval incursions. The structure features a star-shaped plan with massive walls designed to deflect cannon fire. It suffered significant damage during the Peninsular War when French troops attempted to blow it up upon their withdrawal in 1814. Following an extensive restoration completed in 2010, the ruins were reinforced and converted into a modern interpretation center. Visitors can explore the interior galleries and traverse the upper ramparts. The site offers panoramic vantage points across the Mediterranean coastline and the Cap de Creus peninsula.
The upper terrace offers an unobstructed panoramic view of the entire Gulf of Roses and the town coastline.
Wear comfortable, non-slip footwear as the historic stone pathways and ramps can be uneven.
Visit during the golden hour to capture the sunlight hitting the textured walls and the surrounding sea.
Bring binoculars if you wish to observe the ship traffic in the Gulf of Roses from the elevated vantage points.
Do not climb on the unrestored sections of the stone walls or bypass safety railings on the ramparts.
Operating hours vary significantly by season, with extended access during summer months and limited days during winter.
