The castle was originally commissioned by the Vizcounts of Cabrera in the 13th century.
The tribute tower remains the most structurally sound portion of the fortification.
The site was historically part of a defensive network designed to signal enemy ship approaches using fire or smoke.
The chapel of Sant Joan, located within the castle grounds, was documented as early as 1002.
The hill upon which the castle stands is known as the Puig de Sant Joan.
Castell de Sant Joan is a 13th-century defensive fortification situated on the summit of Sant Joan hill, 173 meters above sea level in Blanes. The site features a restored circular tribute tower and remnants of a Romanesque chapel dedicated to Saint John. It served historically as a watchtower to protect the coastal region from pirate incursions. The grounds provide a panoramic vantage point over the town of Blanes, the Mediterranean coastline, and the surrounding Maresme and Selva regions. Its strategic location allowed for visual communication with other towers along the Costa Brava. While much of the original fortress has succumbed to time, the tower and surrounding walls have undergone structural consolidation. The site is accessible via a steep paved road that leads through a pine forest.
The base of the main tower, which frames the entire coastline of Blanes looking southward.
Wear sturdy walking shoes as the path is steep and paved with concrete or asphalt.
Bring your own water as there are no vending machines or permanent cafes at the summit.
Visit on a clear day to ensure visibility extends to the Montjuïc mountain in Barcelona.
Attempting to walk up in flip-flops or open-toed sandals due to the incline and slippery surfaces.