The square is in fact a broad esplanade where the Torre di San Cristoforo (or "Torre di Mariano") stands. This crenelated tower formed part of the walls built in 1291. The square also marks the starting point of the Corso Umberto , the tow..

The church was rebuilt in the 19 C but it still has interesting a works of art . Look especially for the wooden Christ from the 14 C Rhenish school, a fragment of a polyptych St Francis recieving the stigmata by Pietro Cavaro, a sardinian painter..