In 1661 the city passed to the powerful Chigi family, who rebuilt the splendid Palazzo Savelli Chigi in the main square, in which the invaluable Chigi archives were housed.
Okoli leta 1400 vse ozemlje postane last samostana Sant'Anastasio alle Tre Fontane in po kratkem obdobju pod Savelliji še enkrat prodano opatiji Grottaferrata.