The Piccolomin i castle of Celano, protected by a mighty wall, marked by walkways and ramparts, overlooks majestically and imposingly on the Fucino plain once a lake. Belonging to the type of fortified residence, it consists of a central block with a perfectly symmetrical rectangular shape and four corner towers with battlements corresponding to the cardinal points. Born as a military fortress at the end of the century. XIV, by the will of Count Pietro Berardi, it was later enlarged by the niece Covella with her husband Leonello Acclozamora. It was definitively completed and transformed into a residential palace by Antonio Todeschini Piccolomini, nephew of Pope Pius II, after the investiture as count in 1463 by Ferrante D'Aragona, sovereign of Naples. Other noble families alternated over the centuries, until it became state property in 1938. Visible for a radius of many kilometers from the entire Fucino area, the Castle has been the seat since 1992 of the National Museum of Sacred Art of the Marsic a.

The museum itinerary unfolds on a single floor through 8 exhibition rooms , divided into several thematic sections: sculpture (stone and wooden), painting (mural, on canvas and on wood) and goldsmith's art. The splendid works come from all over the Marsican territory and can be dated between the 6th and 18th centuries.

Worthy of note are the two carved wooden doors, made in the 12th century, the precious Alba Fucens triptych with very fine miniatures and the Orsini cross dated 1334.

The castle also houses an archaeological section dedicated to the Torlonia Collection, made up of artifacts found during the drying up of Lake Fucino. Of particular importance and beauty is the limestone relief of the second century. AD with a view of the city and its territory.