The Torre degli Orologi (Clocks tower) overlooks the Piazza della Libertà where Palazzo Municipale and Palazzo Sangallo stand up. The tower, which is the belfry of the near Collegiata di San Francesco, arises with four dials: starting from the top, the first clock shows the Moon phases, the second (mechanical sundial) has hour circles divided into 24 sections in the “Italian hour” style, the third (astronomical clock) strikes hours and minutes, the forth (calendar clock) shows days of the week and of the month. Under the last dial, there is a small sundial used by “moderator” to set the astronomical clock. The clock strikes at hours and at quarters. At midday, several strokes are followed by a brief harmony.
