Venice has only one square or piazza: St.Mark’s Square, a 170 meter-long trapezoid which differs from all other squares that are called "campi" (fields).
The huge prisons were made of large marble and Istrian stone blocks and were intimidating and frightening. Still today we don’t know how they were assembled.
St. Mark's Square (San Marco, in Italian) is one of the most important, beautiful and fascinating places in Italy, famous worldwide for its magic integrity.