Caetani Castle: A Medieval Fortress in Sermoneta, Italy
Site at a Glance
- Rating
- 4.5
- Popularity
- Medium
- Country
- Italy
- Primary era
- Medieval
- External website
- Open
- Eras represented
- Medieval, Early Modern
- Civilizations
- Papal States
- Site type
- Military
- Remains
- Castle
On this page12 sections
History
Caetani Castle is a medieval fortress in Sermoneta, Italy, first commissioned by the Annibaldi family in the early thirteenth century as a military stronghold between Rome and Naples. Built on exposed bedrock, it was designed for defense rather than as a noble residence and became the centre of successive Annibaldi, Caetani, and Borgia phases.
Annibaldi and Caetani rule
The original fortress had walls more than three metres thick. Its surviving early elements include the main keep and the smaller tower called the Maschietto. In 1297, the Annibaldi family transferred Sermoneta, Bassiano, and San Donato to Pietro Caetani, a nephew of Pope Boniface VIII, for 140,000 gold florins.
The Caetani enlarged the fortress with additional buildings and five concentric wall circuits connected by drawbridges. This arrangement allowed the keep to be separated from the rest of the complex during an attack. During the mid-sixteenth century, under Onorato III Caetani, Sermoneta reached its greatest splendour. Onorato was an active military commander and took part in the Battle of Lepanto, the major naval confrontation of 1571 between the Holy League and the Ottoman fleet.
The castle received a succession of prominent guests, including Frederick II, the medieval Holy Roman Emperor, Charles V in 1536, Lucrezia Borgia on several occasions during the papacy of her father Alexander VI, Pope Gregory XIII in 1576, and Pope Sixtus V. Their signatures were preserved on a wall in a room set aside for inscriptions.
The Borgia seizure and later history
After Alexander VI, the Borgia pope, was elected in 1492, he excommunicated the Caetani. In 1500 he confiscated their feudal territories and assigned them to his children, Cesare and Lucrezia Borgia. Alexander VI also strengthened the castle through works by Antonio da Sangallo, an Italian Renaissance architect. These works included the Citadel and the building known as the Cardinal’s House.
The fortress endured repeated attacks over the following centuries. In 1798, Napoleon’s soldiers sacked it, turned it into a prison, and removed 36 cannons. The Caetani recovered possession toward the end of the nineteenth century, after which Gelasio Caetani carried out major restoration works on the family residence.
During the Second World War, especially around the Allied landing at Anzio in 1944, the castle housed Roffredo Caetani, the composer, and his wife Marguerite Caetani, together with colonists who had fled the Pontine Plain. Since 1977, the complex has belonged to the Roffredo Caetani Foundation, founded by Lelia Caetani, the last descendant of the Sermoneta Caetani line. It is now used as a museum and is connected with the foundation’s cultural and conservation work.
Conservation has included the Camere pinte and the facade of the Old Kitchen building. The painted rooms were restored in the late 1990s, and further conservation work has also been undertaken by the International Centre for the Study of the Conservation and Restoration of Cultural Property.
Remains
The surviving complex is organized around a strongly defended central keep and the smaller Maschietto tower, with a large parade ground outside them. Enclosing walls, concentric defensive circuits, drawbridges, courtyards, residences, service buildings, and stables form the wider castle. The principal structures preserve evidence of the fortress’s changing military and residential functions.
Fortified core
Main keep
The maschio, or main keep, is the castle’s principal defensive tower. It contained the lord’s bedrooms and served as the final secure refuge during an invasion. Its independent structure was linked to adjacent buildings by two wooden drawbridges that could be raised when necessary. The keep was also intended to shelter the castle’s staff and servants if the wider complex fell to an enemy. The lord’s original four-poster bed remains inside.
Maschietto and parade ground
The smaller Maschietto tower stands near the keep, while the large parade ground lies outside the two towers. Together with the enclosing walls and the five concentric wall circuits, these features express the layered defensive organization developed around the fortress.
Residential and Renaissance buildings
Barons’ Hall
Some earlier buildings were demolished as parts of the complex were created or reorganized, including the Barons’ Hall. The Borgia family modified the hall in the fifteenth century, linking the surviving space to the period when the castle’s military structure was being reshaped under Borgia control.
Camere pinte
The Camere pinte are three guest rooms. Two contain frescoes by an unknown artist associated with the school of Pinturicchio, an Italian Renaissance painter. Their scenes depict mythological figures and the theological virtues of faith, hope, and charity. The rooms were restored in the late 1990s.
Cardinal’s House
The Cardinal’s House was built in 1400 for Valentino Borgia. It contains Madonna and Child with Saints Peter, Stephen, and John the Baptist, painted in 1541 by Girolamo Siciolante, an Italian Renaissance painter known as Il Sermoneta. The painting originally stood in Valvisciolo Abbey.
Inscriptions and associated buildings
The inscription room preserves wall inscriptions made by distinguished visitors to the castle. One wall also retains an engraved musical staff made by Roffredo Caetani. The wider complex includes the Citadel, the Old Kitchen building, and the stables alongside the keep, Maschietto, Barons’ Hall, Camere pinte, parade ground, and enclosing walls.
