By the 16th century, several noble lombard families (Casati, Durini, Giulini, Vismara, D'Adda, Barbò) begin to build many important villas usually surrounded by park, the ville di delizia, including the Villa Borromeo-d'Adda, the Villa la Cazzola and the Villa San Martino (the current residence of Silvio Berlusconi).