The Castle of the Clavesana was a defensive building in Cervo, in the province of Imperia, located on the highest point of the historic center in Piazza del Castello. The building was born mainly as a fortified church, dedicated to St. Catherine of Alexandria, on the highest hill in the village of Cervia. Only then, around the thirteenth century, the Marquis of Clavesana, gentlemen of the territory, made their marble palace-palace by incorporating in the building an antecedent Romanesque tower. In its history it was used for the most diverse uses: besides the oratory, the premises below hosted the hospital wanted by the Knights of Rhodes which was titled to St. Anthony Abbot. Today the first floor rooms are home to the Ethnographic Museum of the Ponente Ligure, as well as the local tourist information office, while the top floor is dedicated to art exhibitions during the summer. The building was built entirely of stone with rectangular plan and completed with the four towers at the edges of the structure.