The castle is located in Mandatoriccio highest area of ​​the country and represents the core of the historic center, its construction is dated around the middle of 1400, early 1500, but uncertain and conflicting are the events that have shaped the history of 'property in the course of centuries. It is estimated that the first town formed around the Castle, was originally equipped with walls, as is implied by some remains of the ramparts found nearby. The castle was recently restored and is now become Residence Hall.
The Castle Of Arso private property, located at the entrance of the valley, is one of the most significant architectural permanence of the municipal area. Inspired by Renaissance, can be traced back to the year rebuilding plan around 1000. Popular sources are saying that once was bathed by the Ionian Sea and probably constituted a feudal agricultural fortified residence. From the architectural point of view could be called unique model for the construction technique used: presents unusual four-sided "sail" in stone. SS. Peter and Paul Castle is located almost adjacent to the Mother Church, the year of construction is around early 1600 and this view is confirmed by the date of 1684 on the base of the baptismal font. Architectural elements of significant value style are: the ceiling covered in fine walnut wood, carved and hand-crafted and the high altar of white marble, both placed in the nave. Currently the church has three naves, but the diversity of materials used and the irregular layout are easily assume their construction at different times.