The palace is the oldest building in town, has a square shape, with rectangular towers, and a Gothic style identified by the door and three mullioned windows in marble. Above the door at the pointed arch is a Roman frieze of the imperial period and at the sides a Roman statue of the second century AD. The three mullioned windows are original and under each of them is placed a small opening. In some areas the palace remained almost intact, such as the chapel dedicated to St. Onofrio with apse and the fourteenth-century frescoes. In the reception hall an impressive mosaic in black and white tiles was found representing four armed warriors. The palace had decayed under Prince Carafa, who had stripped it of its finest works, and has been home for officers and prisoners. In the early 1900s it was restored and transformed into a theatre and conference hall of the municipality.