Tower of Merola Monument · Puig-reig, Berguedà, Barcelona The tower of Merola, or castle of Merola, stands in the municipality of Puig-reig (Berguedà), on the banks of the Llobregat, declared a Bien Cultural de Interés Nacional. It is documented as a fortress from the year 983; the site formed part of the territory of the castle of Puig-reig in the 9th and 10th centuries, and its lords are recorded as vicars of that castle and protectors of the monastery of Sant Pere de la Portella. In the 12th century Bernat de Merola stood out, a friend of the troubadour Guillem de Berguedà, who probably had the tower built; his domains passed in 1225 to Pere d'Olvan. Only the north wall of the keep survives, popularly known as “la torre dels Moros”: it is 4.95 metres high, with a wall 1.20 thick, of an almost square plan and three storeys high. Photo: Rigole (CC BY-SA 4.0) What to see and do in Puig-reig