The structure is located in Piazza Mazzini, in the historic city center, or in the part that bordered the ancient fortress of Castelvecchio (castellum vetus).

[1] Its foundation, perhaps on a pre-existing structure and with walls at the base of 1.30 meters thick, dates back to the 13th century and the public clock has been there since 1438.

It was equipped with an external staircase, on the east side, which connected the square with the interior of the tower,[2] in which justice was administered from the fifteenth century and where there was also a torture chamber.

In 1492 it was raised with a new belfry which still hosts the concert of eight bells, some of which date back to the 16th century, of the Prepositural Church of Sant'Erasmo.

For this reason, in 2006, it was subjected to important static checks, since the out of plumb has increased in the last decades.