It was built by will of the Paternò Castello family , the princes of Biscari , starting from the late 17th century , lasting for much of the following century , after the devastations of the 11 January 1693 earthquake . The new palace was built directly against the city walls ( Charles V 's walls ) , which had partially withstood the earthquake
11 January 1693 earthquake
1693 Sicily earthquake
Palazzo Biscari