Bosa is located 2 meters above sea level and has 7813 inhabitants. Located in the western part of Sardinia is spread in a beautiful basin on the banks of the river Temo. Its origins date back to centuries. IX to C. From XI century it became feud of Malaspina, who fortified the town. Even today you can admire the castle and the walls built at that time. The Castello di Serravalle or Malaspina was built in stages from the second decade of the twelfth century when the towers were made. The scheme is similar to that of the castle of St. Michele in Cagliari. The great tower was designed by John Còpula, built in the tufa color pink. 
The successive enlargements brought the castle to reach a perimeter of 300 meters including the seven towers. Within the castle was built in the XIV century. the church of Our Lady of Regnos Altos. In the town deserves a visit of the leather tanneries along the banks of the river Temo. The complex was still functioning until the end of the Second World War and it is now a national monument subject to protection.
The construction of the cathedral of the Diocese of Bosa dates back to the period between 1062 and 1073. The facade, attributed to Anselmo from Como, was done by a shrine with columns on the top. There are also representations of S. Peter and S. Paul, Madonna col Bambino and St. Costatino imperatore. In the apse there are pagan inscriptions from nearby Roman necropolis and medieval town of great interest.
The successive enlargements brought the castle to reach a perimeter of 300 meters including the seven towers. Within the castle was built in the XIV century. the church of Our Lady of Regnos Altos. In the town deserves a visit of the leather tanneries along the banks of the river Temo. The complex was still functioning until the end of the Second World War and it is now a national monument subject to protection.The construction of the cathedral of the Diocese of Bosa dates back to the period between 1062 and 1073. The facade, attributed to Anselmo from Como, was done by a shrine with columns on the top. There are also representations of S. Peter and S. Paul, Madonna col Bambino and St. Costatino imperatore. In the apse there are pagan inscriptions from nearby Roman necropolis and medieval town of great interest.
