The palace was damaged during the 1693 Sicily earthquake , resulting in further repairs and alternations . The upper floor was possibly built in 1707 by the architect Giovanni Barbara . The interior was also altered and embellished throughout the 17th and 18th centuries , with the main staircase being built in 1733 to designs of Romano Carapecchia . Due to these modifications , the building has a somewhat labyrinthine plan . The only remains of the original Castellania is a small courtyard with a Gothic groin vault cloister
1693 Sicily earthquake
1693 Sicily earthquake
Inquisitor's Palace