The Fortress of Arquata del Tronto in the Marche region is an imposing structure that rises on the crag to the north of the historic center. It represents a typical example of military architecture in the Apennines Area. Its foundation is between the eleventh and the twelfth century, an initial phase of embankment which undergoes a gradual and progressive increase in structures to enhance the functionality of the fortress.
The Orsini Colonna castle of Avezzano represents one of the most important historic buildings in the internal area of Abruzzo. Founded at the end of the fifteenth century, on the rests of an older structure, with continuing modification till the sixteenth century, the building had several damages with the earthquake of January thirteenth 1915, which destroyed the entire city Avezzano and the neighborhood, causing more than 30000 victims.