The Palazzo del Provveditore Generale, built, as evidenced by the date on the keystone of the entrance gate, in 1598. Initially, this was the seat of the noble representative of the Serenissima, the highest civil and military authority of the city, and gradually of the commanding generals and podestà. 

Today it houses the office of the Mayor and the municipal administration. (Info taken from www.palmanova.it Arte Video Palmanova)