The church of Nostra Signora di Regnos Altos was incorporated into the castle walls long after the initial construction of the fortress.
The frescoes inside the small chapel are considered one of the most important cycles of Spanish-influenced Gothic painting in Sardinia.
The castle foundations were built directly into the limestone rock of Serravalle hill.
The Malaspina family controlled the area from the castle starting around 1112 AD.
A secret underground passage is historically cited as connecting the castle to the cathedral in the town below, though parts remain inaccessible.
The chapel contains a unique wooden statue of the Madonna, which is the focus of a major local religious procession in September.
Castello di Serravalle, also known as Castello dei Malaspina, is a 12th-century fortification situated on the summit of Serravalle hill overlooking Bosa in Sardinia. Constructed by the Tuscan Malaspina family, the site retains its original defensive walls and the pentagonal keep. Within the curtain walls lies the 14th-century church of Nostra Signora di Regnos Altos. The church features significant 14th-century frescoes discovered during restoration work in the 1970s. The site serves as a vantage point for panoramic views of the Temo river valley and the historic colored houses of Bosa. Access is gained through a stone path leading upward from the medieval town center. The fortress played a strategic role in territorial control during the Middle Ages in western Sardinia.
The defensive wall ramparts providing a sweeping vista of the multi-colored houses of Bosa and the winding Temo river.
Wear sturdy walking shoes, as the path to the summit is steep, uneven, and cobbled.
Bring water, as there are limited facilities for purchasing drinks once you reach the summit area.
Apply sunscreen as the hilltop location is fully exposed to the Mediterranean sun with minimal shade.
Avoid attempting the walk in the heat of midday during the peak summer months.
Operating hours often reduce during the winter months; check local signage as the site may close during inclement weather.
Maintain a respectful silence inside the church of Nostra Signora di Regnos Altos.
