Calascio is a comune and village in the province of L'Aquila, in the Abruzzo region of central Italy.

The existence of the village, of Norman origin, is already testified from 816 in a document of Ludwig I as a possession of the "Volturnensi" monks.

The structure of the castle was modified and expanded to its slopes and formed a small village, which is also perched.

So for a long period of time there was the coexistence of two villages, Calascio and Rocca Calascio, a different strategic functions being the first place on the mountainsides on the road that leads to Santo Stefano di Sessanio and Aquila, and the second in a dominant position on the whole of Navelli plateau and close to the Campo Imperatore pastures.

It was devastated by the violent 1703 Apennine earthquakes, after which the heavily damaged fortress was almost completely abandoned and much of the population moved to the underlying Calascio.